939913257 has 16 divisors (see below), whose sum is σ = 1295009600. Its totient is φ = 605921472.

The previous prime is 939913253. The next prime is 939913277. The reversal of 939913257 is 752319939.

It is not a de Polignac number, because 939913257 - 2² = 939913253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939913253) 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, 7882 + ... + 44067.

It is an arithmetic number, because the mean of its divisors is an integer number (80938100).

Almost surely, 2^939913257 is an apocalyptic number.

It is an amenable number.

939913257 is a deficient number, since it is larger than the sum of its proper divisors (355096343).

939913257 is a wasteful number, since it uses less digits than its factorization.

939913257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52152.

The product of its digits is 459270, while the sum is 48.

The square root of 939913257 is about 30658.0047785240. The cubic root of 939913257 is about 979.5559757894. Note that the first 3 decimals are identical.

The spelling of 939913257 in words is "nine hundred thirty-nine million, nine hundred thirteen thousand, two hundred fifty-seven".