39996880 has 160 divisors (see below), whose sum is σ = 119420928. Its totient is φ = 12096000.

The previous prime is 39996877. The next prime is 39996899. The reversal of 39996880 is 8869993.

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 31 ways as a sum of consecutive naturals, for example, 264805 + ... + 264955.

Almost surely, 2^39996880 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 39996880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59710464).

39996880 is an abundant number, since it is smaller than the sum of its proper divisors (79424048).

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

39996880 is a wasteful number, since it uses less digits than its factorization.

39996880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 39996880 is about 6324.3086578693. The cubic root of 39996880 is about 341.9862972292.

It can be divided in two parts, 399 and 96880, that added together give a palindrome (97279).

The spelling of 39996880 in words is "thirty-nine million, nine hundred ninety-six thousand, eight hundred eighty".