39634972 has 12 divisors (see below), whose sum is σ = 74696776. Its totient is φ = 18293040.

The previous prime is 39634951. The next prime is 39634979. The reversal of 39634972 is 27943693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39634979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381054 + ... + 381157.

Almost surely, 2^39634972 is an apocalyptic number.

It is an amenable number.

39634972 is a deficient number, since it is larger than the sum of its proper divisors (35061804).

39634972 is a wasteful number, since it uses less digits than its factorization.

39634972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762228 (or 762226 counting only the distinct ones).

The product of its digits is 244944, while the sum is 43.

The square root of 39634972 is about 6295.6311836066. The cubic root of 39634972 is about 340.9516934923.

The spelling of 39634972 in words is "thirty-nine million, six hundred thirty-four thousand, nine hundred seventy-two".