939715939 has 2 divisors, whose sum is σ = 939715940. Its totient is φ = 939715938.

The previous prime is 939715897. The next prime is 939715961. The reversal of 939715939 is 939517939.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939715939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 939715939.

It is not a weakly prime, because it can be changed into another prime (939715999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469857969 + 469857970.

It is an arithmetic number, because the mean of its divisors is an integer number (469857970).

Almost surely, 2^939715939 is an apocalyptic number.

939715939 is a deficient number, since it is larger than the sum of its proper divisors (1).

939715939 is an equidigital number, since it uses as much as digits as its factorization.

939715939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2066715, while the sum is 55.

The square root of 939715939 is about 30654.7865593613. The cubic root of 939715939 is about 979.4874242319.

The spelling of 939715939 in words is "nine hundred thirty-nine million, seven hundred fifteen thousand, nine hundred thirty-nine".