76439808 has 72 divisors (see below), whose sum is σ = 226066400. Its totient is φ = 25477632.

The previous prime is 76439801. The next prime is 76439819. The reversal of 76439808 is 80893467.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (76439801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383 + ... + 12441.

Almost surely, 2^76439808 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 76439808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113033200).

76439808 is an abundant number, since it is smaller than the sum of its proper divisors (149626592).

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

76439808 is a wasteful number, since it uses less digits than its factorization.

76439808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11084 (or 11064 counting only the distinct ones).

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

The square root of 76439808 is about 8742.9862175346. The cubic root of 76439808 is about 424.3978702727.

The spelling of 76439808 in words is "seventy-six million, four hundred thirty-nine thousand, eight hundred eight".