39720084 has 24 divisors (see below), whose sum is σ = 93350880. Its totient is φ = 13144224.

The previous prime is 39720073. The next prime is 39720113. The reversal of 39720084 is 48002793.

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 7 ways as a sum of consecutive naturals, for example, 10239 + ... + 13574.

It is an arithmetic number, because the mean of its divisors is an integer number (3889620).

Almost surely, 2^39720084 is an apocalyptic number.

It is an amenable number.

39720084 is an abundant number, since it is smaller than the sum of its proper divisors (53630796).

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

39720084 is a wasteful number, since it uses less digits than its factorization.

39720084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23959 (or 23957 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 39720084 is about 6302.3871667805. The cubic root of 39720084 is about 341.1955718316.

The spelling of 39720084 in words is "thirty-nine million, seven hundred twenty thousand, eighty-four".