39985672 has 16 divisors (see below), whose sum is σ = 75144060. Its totient is φ = 19947264.

The previous prime is 39985643. The next prime is 39985697. The reversal of 39985672 is 27658993.

It can be written as a sum of positive squares in 2 ways, for example, as 31069476 + 8916196 = 5574^2 + 2986^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813 + ... + 9124.

Almost surely, 2^39985672 is an apocalyptic number.

It is an amenable number.

39985672 is a deficient number, since it is larger than the sum of its proper divisors (35158388).

39985672 is a wasteful number, since it uses less digits than its factorization.

39985672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11400 (or 11396 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 39985672 is about 6323.4224910249. The cubic root of 39985672 is about 341.9543502332.

The spelling of 39985672 in words is "thirty-nine million, nine hundred eighty-five thousand, six hundred seventy-two".