39939634 has 32 divisors (see below), whose sum is σ = 73457280. Its totient is φ = 15904512.

The previous prime is 39939631. The next prime is 39939643. The reversal of 39939634 is 43693993.

It is not an unprimeable number, because it can be changed into a prime (39939631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12682 + ... + 15514.

It is an arithmetic number, because the mean of its divisors is an integer number (2295540).

Almost surely, 2^39939634 is an apocalyptic number.

39939634 is a deficient number, since it is larger than the sum of its proper divisors (33517646).

39939634 is a wasteful number, since it uses less digits than its factorization.

39939634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914.

The product of its digits is 472392, while the sum is 46.

The square root of 39939634 is about 6319.7811670975. The cubic root of 39939634 is about 341.8230620376.

The spelling of 39939634 in words is "thirty-nine million, nine hundred thirty-nine thousand, six hundred thirty-four".