39997492 has 12 divisors (see below), whose sum is σ = 70076160. Its totient is φ = 19975736.

The previous prime is 39997487. The next prime is 39997493. The reversal of 39997492 is 29479993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (5839680).

Almost surely, 2^39997492 is an apocalyptic number.

It is an amenable number.

39997492 is a deficient number, since it is larger than the sum of its proper divisors (30078668).

39997492 is a wasteful number, since it uses less digits than its factorization.

39997492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11510 (or 11508 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 52.

The square root of 39997492 is about 6324.3570424194. The cubic root of 39997492 is about 341.9880414865.

The spelling of 39997492 in words is "thirty-nine million, nine hundred ninety-seven thousand, four hundred ninety-two".