39907628 has 12 divisors (see below), whose sum is σ = 69963432. Its totient is φ = 19918080.

The previous prime is 39907627. The next prime is 39907649. The reversal of 39907628 is 82670993.

It is not an unprimeable number, because it can be changed into a prime (39907627) 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, 6338 + ... + 10953.

It is an arithmetic number, because the mean of its divisors is an integer number (5830286).

Almost surely, 2^39907628 is an apocalyptic number.

It is an amenable number.

39907628 is a deficient number, since it is larger than the sum of its proper divisors (30055804).

39907628 is a wasteful number, since it uses less digits than its factorization.

39907628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17872 (or 17870 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 39907628 is about 6317.2484516599. The cubic root of 39907628 is about 341.7317299320.

The spelling of 39907628 in words is "thirty-nine million, nine hundred seven thousand, six hundred twenty-eight".