39745972 has 24 divisors (see below), whose sum is σ = 80994816. Its totient is φ = 16711968.

The previous prime is 39745913. The next prime is 39746009. The reversal of 39745972 is 27954793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11908 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (3374784).

Almost surely, 2^39745972 is an apocalyptic number.

It is an amenable number.

39745972 is an abundant number, since it is smaller than the sum of its proper divisors (41248844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39745972 is a wasteful number, since it uses less digits than its factorization.

39745972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26847 (or 26845 counting only the distinct ones).

The product of its digits is 476280, while the sum is 46.

The square root of 39745972 is about 6304.4406571876. The cubic root of 39745972 is about 341.2696817176.

The spelling of 39745972 in words is "thirty-nine million, seven hundred forty-five thousand, nine hundred seventy-two".