939720868 has 24 divisors (see below), whose sum is σ = 1670769464. Its totient is φ = 462412800.

The previous prime is 939720863. The next prime is 939720871. The reversal of 939720868 is 868027939.

It can be written as a sum of positive squares in 4 ways, for example, as 32626944 + 907093924 = 5712^2 + 30118^2 .

It is not an unprimeable number, because it can be changed into a prime (939720863) 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, 63538 + ... + 76918.

Almost surely, 2^939720868 is an apocalyptic number.

It is an amenable number.

939720868 is a deficient number, since it is larger than the sum of its proper divisors (731048596).

939720868 is a wasteful number, since it uses less digits than its factorization.

939720868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663 (or 13661 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 939720868 is about 30654.8669545311. The cubic root of 939720868 is about 979.4891367654.

The spelling of 939720868 in words is "nine hundred thirty-nine million, seven hundred twenty thousand, eight hundred sixty-eight".