39947064 has 16 divisors (see below), whose sum is σ = 99867720. Its totient is φ = 13315680.

The previous prime is 39947057. The next prime is 39947119. The reversal of 39947064 is 46074993.

It is a congruent number.

It is an unprimeable number.

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, 832207 + ... + 832254.

Almost surely, 2^39947064 is an apocalyptic number.

It is an amenable number.

39947064 is an abundant number, since it is smaller than the sum of its proper divisors (59920656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39947064 is a wasteful number, since it uses less digits than its factorization.

39947064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664470 (or 1664466 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 39947064 is about 6320.3689765709. The cubic root of 39947064 is about 341.8442572567.

The spelling of 39947064 in words is "thirty-nine million, nine hundred forty-seven thousand, sixty-four".