39436864 has 28 divisors (see below), whose sum is σ = 79045308. Its totient is φ = 19520000.

The previous prime is 39436849. The next prime is 39436871. The reversal of 39436864 is 46863493.

It can be written as a sum of positive squares in 2 ways, for example, as 32718400 + 6718464 = 5720^2 + 2592^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39436864.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414 + ... + 9514.

Almost surely, 2^39436864 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 39436864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39522654).

39436864 is an abundant number, since it is smaller than the sum of its proper divisors (39608444).

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

39436864 is a wasteful number, since it uses less digits than its factorization.

39436864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214 (or 6204 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 39436864 is about 6279.8777058156. The cubic root of 39436864 is about 340.3826833002.

The spelling of 39436864 in words is "thirty-nine million, four hundred thirty-six thousand, eight hundred sixty-four".