39716864 has 96 divisors (see below), whose sum is σ = 90810720. Its totient is φ = 17203200.

The previous prime is 39716857. The next prime is 39716881. The reversal of 39716864 is 46861793.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 7 ways as a sum of consecutive naturals, for example, 923627 + ... + 923669.

It is an arithmetic number, because the mean of its divisors is an integer number (945945).

Almost surely, 2^39716864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39716864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45405360).

39716864 is an abundant number, since it is smaller than the sum of its proper divisors (51093856).

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

39716864 is a wasteful number, since it uses less digits than its factorization.

39716864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 97 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 39716864 is about 6302.1317028447. The cubic root of 39716864 is about 341.1863516478.

Subtracting 39716864 from its reverse (46861793), we obtain a square (7144929 = 2673²).

The spelling of 39716864 in words is "thirty-nine million, seven hundred sixteen thousand, eight hundred sixty-four".