39708864 has 84 divisors (see below), whose sum is σ = 122596656. Its totient is φ = 12215808.

The previous prime is 39708839. The next prime is 39708899. The reversal of 39708864 is 46880793.

It is a happy number.

39708864 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4837 + ... + 10139.

It is an arithmetic number, because the mean of its divisors is an integer number (1459484).

Almost surely, 2^39708864 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 39708864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61298328).

39708864 is an abundant number, since it is smaller than the sum of its proper divisors (82887792).

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

39708864 is a wasteful number, since it uses less digits than its factorization.

39708864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 39708864 is about 6301.4969650076. The cubic root of 39708864 is about 341.1634422014.

The spelling of 39708864 in words is "thirty-nine million, seven hundred eight thousand, eight hundred sixty-four".