39961708 has 12 divisors (see below), whose sum is σ = 69991992. Its totient is φ = 19964000.

The previous prime is 39961699. The next prime is 39961709. The reversal of 39961708 is 80716993.

It is not an unprimeable number, because it can be changed into a prime (39961709) 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, 2208 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (5832666).

Almost surely, 2^39961708 is an apocalyptic number.

It is an amenable number.

39961708 is a deficient number, since it is larger than the sum of its proper divisors (30030284).

39961708 is a wasteful number, since it uses less digits than its factorization.

39961708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8432 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 39961708 is about 6321.5273470895. The cubic root of 39961708 is about 341.8860238283.

The spelling of 39961708 in words is "thirty-nine million, nine hundred sixty-one thousand, seven hundred eight".