939902931 has 24 divisors (see below), whose sum is σ = 1485088176. Its totient is φ = 568088640.

The previous prime is 939902893. The next prime is 939902939. The reversal of 939902931 is 139209939.

939902931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 939902931 - 2²¹ = 937805779 is a prime.

It is a super-2 number, since 2×939902931² = 1766835039404781522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (939902939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24201 + ... + 49653.

It is an arithmetic number, because the mean of its divisors is an integer number (61878674).

Almost surely, 2^939902931 is an apocalyptic number.

939902931 is a deficient number, since it is larger than the sum of its proper divisors (545185245).

939902931 is a wasteful number, since it uses less digits than its factorization.

939902931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25843 (or 25840 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 939902931 is about 30657.8363717990. The cubic root of 939902931 is about 979.5523886031.

The spelling of 939902931 in words is "nine hundred thirty-nine million, nine hundred two thousand, nine hundred thirty-one".