39972670 has 8 divisors (see below), whose sum is σ = 71950824. Its totient is φ = 15989064.

The previous prime is 39972649. The next prime is 39972703. The reversal of 39972670 is 7627993.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1998624 + ... + 1998643.

It is an arithmetic number, because the mean of its divisors is an integer number (8993853).

Almost surely, 2^39972670 is an apocalyptic number.

39972670 is a deficient number, since it is larger than the sum of its proper divisors (31978154).

39972670 is a wasteful number, since it uses less digits than its factorization.

39972670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997274.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 39972670 is about 6322.3943249373. The cubic root of 39972670 is about 341.9172821849.

The spelling of 39972670 in words is "thirty-nine million, nine hundred seventy-two thousand, six hundred seventy".