920556939 has 16 divisors (see below), whose sum is σ = 1236920832. Its totient is φ = 608962368.

The previous prime is 920556911. The next prime is 920556941. The reversal of 920556939 is 939655029.

It is a de Polignac number, because none of the positive numbers 2^k-920556939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (920556139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371007 + ... + 373479.

It is an arithmetic number, because the mean of its divisors is an integer number (77307552).

Almost surely, 2^920556939 is an apocalyptic number.

920556939 is a deficient number, since it is larger than the sum of its proper divisors (316363893).

920556939 is a wasteful number, since it uses less digits than its factorization.

920556939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its (nonzero) digits is 656100, while the sum is 48.

The square root of 920556939 is about 30340.6812547115. The cubic root of 920556939 is about 972.7850448352.

The spelling of 920556939 in words is "nine hundred twenty million, five hundred fifty-six thousand, nine hundred thirty-nine".