939400870931 has 8 divisors (see below), whose sum is σ = 990336129024. Its totient is φ = 889755113160.

The previous prime is 939400870927. The next prime is 939400870951. The reversal of 939400870931 is 139078004939.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 939400870931 - 2² = 939400870927 is a prime.

It is a super-2 number, since 2×939400870931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939400870951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322373585 + ... + 322376498.

It is an arithmetic number, because the mean of its divisors is an integer number (123792016128).

Almost surely, 2^939400870931 is an apocalyptic number.

939400870931 is a deficient number, since it is larger than the sum of its proper divisors (50935258093).

939400870931 is a wasteful number, since it uses less digits than its factorization.

939400870931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644750161.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 939400870931 in words is "nine hundred thirty-nine billion, four hundred million, eight hundred seventy thousand, nine hundred thirty-one".