39997311 has 12 divisors (see below), whose sum is σ = 56652552. Its totient is φ = 25095808.

The previous prime is 39997301. The next prime is 39997319. The reversal of 39997311 is 11379993.

It is not a de Polignac number, because 39997311 - 2⁶ = 39997247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22200 + ... + 23933.

It is an arithmetic number, because the mean of its divisors is an integer number (4721046).

Almost surely, 2^39997311 is an apocalyptic number.

39997311 is a deficient number, since it is larger than the sum of its proper divisors (16655241).

39997311 is a wasteful number, since it uses less digits than its factorization.

39997311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46170 (or 46153 counting only the distinct ones).

The product of its digits is 45927, while the sum is 42.

The square root of 39997311 is about 6324.3427326482. The cubic root of 39997311 is about 341.9875256214.

The spelling of 39997311 in words is "thirty-nine million, nine hundred ninety-seven thousand, three hundred eleven".