939031947 has 24 divisors (see below), whose sum is σ = 1607563776. Its totient is φ = 536588712.

The previous prime is 939031931. The next prime is 939031949. The reversal of 939031947 is 749130939.

It is not a de Polignac number, because 939031947 - 2⁴ = 939031931 is a prime.

It is a super-2 number, since 2×939031947² = 1763561994973221618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (939031949) 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, 274323 + ... + 277724.

It is an arithmetic number, because the mean of its divisors is an integer number (66981824).

Almost surely, 2^939031947 is an apocalyptic number.

939031947 is a deficient number, since it is larger than the sum of its proper divisors (668531829).

939031947 is an equidigital number, since it uses as much as digits as its factorization.

939031947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552069 (or 552057 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 939031947 is about 30643.6281631272. The cubic root of 939031947 is about 979.2497197126.

The spelling of 939031947 in words is "nine hundred thirty-nine million, thirty-one thousand, nine hundred forty-seven".