39172492 has 24 divisors (see below), whose sum is σ = 71575280. Its totient is φ = 18740160.

The previous prime is 39172489. The next prime is 39172493. The reversal of 39172492 is 29427193.

39172492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (39172493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6859 + ... + 11197.

Almost surely, 2^39172492 is an apocalyptic number.

It is an amenable number.

39172492 is a deficient number, since it is larger than the sum of its proper divisors (32402788).

39172492 is a wasteful number, since it uses less digits than its factorization.

39172492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441 (or 4439 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 39172492 is about 6258.7931744067. The cubic root of 39172492 is about 339.6203721310.

The spelling of 39172492 in words is "thirty-nine million, one hundred seventy-two thousand, four hundred ninety-two".