39445972 has 12 divisors (see below), whose sum is σ = 70499520. Its totient is φ = 19303256.

The previous prime is 39445963. The next prime is 39446009. The reversal of 39445972 is 27954493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104722 + ... + 105097.

It is an arithmetic number, because the mean of its divisors is an integer number (5874960).

Almost surely, 2^39445972 is an apocalyptic number.

It is an amenable number.

39445972 is a deficient number, since it is larger than the sum of its proper divisors (31053548).

39445972 is a wasteful number, since it uses less digits than its factorization.

39445972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209870 (or 209868 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 39445972 is about 6280.6028373079. The cubic root of 39445972 is about 340.4088852386.

The spelling of 39445972 in words is "thirty-nine million, four hundred forty-five thousand, nine hundred seventy-two".