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11943937 = 106911173
BaseRepresentation
bin101101100100…
…000000000001
3211110211000001
4231210000001
511024201222
61104000001
7203343655
oct55440001
924424001
1011943937
116818725
124000001
132622625
14182ca65
1510ade27
hexb64001

11943937 has 4 divisors (see below), whose sum is σ = 11956180. Its totient is φ = 11931696.

The previous prime is 11943929. The next prime is 11943941. The reversal of 11943937 is 73934911.

It is a Cunningham number, because it is equal to 34562+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5588496 + 6355441 = 2364^2 + 2521^2 .

It is a cyclic number.

It is not a de Polignac number, because 11943937 - 23 = 11943929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11943896 and 11943905.

It is not an unprimeable number, because it can be changed into a prime (11943907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4518 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (2989045).

It is a Proth number, since it is equal to 729 ⋅ 214 + 1 and 729 < 214.

Almost surely, 211943937 is an apocalyptic number.

It is an amenable number.

11943937 is a deficient number, since it is larger than the sum of its proper divisors (12243).

11943937 is a wasteful number, since it uses less digits than its factorization.

11943937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242.

The product of its digits is 20412, while the sum is 37.

The square root of 11943937 is about 3456.0001446759. Note that the first 3 decimals coincide. The cubic root of 11943937 is about 228.5857578628.

It can be divided in two parts, 11943 and 937, that added together give a triangular number (12880 = T160).

The spelling of 11943937 in words is "eleven million, nine hundred forty-three thousand, nine hundred thirty-seven".

Divisors: 1 1069 11173 11943937