11920843 has 4 divisors (see below), whose sum is σ = 13004568. Its totient is φ = 10837120.

The previous prime is 11920837. The next prime is 11920871. The reversal of 11920843 is 34802911.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11920843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11930843) 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, 541846 + ... + 541867.

It is an arithmetic number, because the mean of its divisors is an integer number (3251142).

Almost surely, 2^11920843 is an apocalyptic number.

11920843 is a deficient number, since it is larger than the sum of its proper divisors (1083725).

11920843 is a wasteful number, since it uses less digits than its factorization.

11920843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083724.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 11920843 is about 3452.6573823651. The cubic root of 11920843 is about 228.4383367487.

The spelling of 11920843 in words is "eleven million, nine hundred twenty thousand, eight hundred forty-three".