39239315397 has 24 divisors (see below), whose sum is σ = 57897230976. Its totient is φ = 25597525056.

The previous prime is 39239315383. The next prime is 39239315399. The reversal of 39239315397 is 79351393293.

39239315397 is a `hidden beast` number, since 3 + 9 + 239 + 3 + 15 + 397 = 666.

39239315397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39239315397 - 2⁶ = 39239315333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39239315399) 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, 3300658 + ... + 3312524.

It is an arithmetic number, because the mean of its divisors is an integer number (2412384624).

Almost surely, 2^39239315397 is an apocalyptic number.

It is an amenable number.

39239315397 is a deficient number, since it is larger than the sum of its proper divisors (18657915579).

39239315397 is a wasteful number, since it uses less digits than its factorization.

39239315397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19737 (or 19734 counting only the distinct ones).

The product of its digits is 4133430, while the sum is 54.

The spelling of 39239315397 in words is "thirty-nine billion, two hundred thirty-nine million, three hundred fifteen thousand, three hundred ninety-seven".