39315997 has 16 divisors (see below), whose sum is σ = 47472640. Its totient is φ = 31807728.

The previous prime is 39315937. The next prime is 39316001. The reversal of 39315997 is 79951393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39315997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39315907) 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, 64468 + ... + 65074.

It is an arithmetic number, because the mean of its divisors is an integer number (2967040).

Almost surely, 2^39315997 is an apocalyptic number.

It is an amenable number.

39315997 is a deficient number, since it is larger than the sum of its proper divisors (8156643).

39315997 is a wasteful number, since it uses less digits than its factorization.

39315997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its digits is 229635, while the sum is 46.

The square root of 39315997 is about 6270.2469648332. The cubic root of 39315997 is about 340.0345899065.

The spelling of 39315997 in words is "thirty-nine million, three hundred fifteen thousand, nine hundred ninety-seven".