39999696 has 120 divisors (see below), whose sum is σ = 116367552. Its totient is φ = 11827200.

The previous prime is 39999677. The next prime is 39999709. The reversal of 39999696 is 69699993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412320 + ... + 412416.

Almost surely, 2^39999696 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 39999696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58183776).

39999696 is an abundant number, since it is smaller than the sum of its proper divisors (76367856).

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

39999696 is a wasteful number, since it uses less digits than its factorization.

39999696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 184 counting only the distinct ones).

The product of its digits is 6377292, while the sum is 60.

The square root of 39999696 is about 6324.5312869809. The cubic root of 39999696 is about 341.9943229453.

It can be divided in two parts, 3999 and 9696, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 39999696 in words is "thirty-nine million, nine hundred ninety-nine thousand, six hundred ninety-six".