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12040993 = 33293617
BaseRepresentation
bin101101111011…
…101100100001
3211122202010201
4231323230201
511040302433
61110025201
7204226636
oct55735441
924582121
1012040993
116884638
124048201
132657863
14185618d
1510cca7d
hexb7bb21

12040993 has 4 divisors (see below), whose sum is σ = 12047940. Its totient is φ = 12034048.

The previous prime is 12040969. The next prime is 12040999. The reversal of 12040993 is 39904021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1595169 + 10445824 = 1263^2 + 3232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12040993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12040999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521 + ... + 5137.

It is an arithmetic number, because the mean of its divisors is an integer number (3011985).

Almost surely, 212040993 is an apocalyptic number.

It is an amenable number.

12040993 is a deficient number, since it is larger than the sum of its proper divisors (6947).

12040993 is an equidigital number, since it uses as much as digits as its factorization.

12040993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12040993 is about 3470.0134005505. The cubic root of 12040993 is about 229.2032481694.

The spelling of 12040993 in words is "twelve million, forty thousand, nine hundred ninety-three".

Divisors: 1 3329 3617 12040993