79439976 has 288 divisors, whose sum is σ = 288100800. Its totient is φ = 19514880.

The previous prime is 79439947. The next prime is 79439977. The reversal of 79439976 is 67993497.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (79439977) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 892540 + ... + 892628.

It is an arithmetic number, because the mean of its divisors is an integer number (1000350).

Almost surely, 2^79439976 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 79439976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144050400).

79439976 is an abundant number, since it is smaller than the sum of its proper divisors (208660824).

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

79439976 is a wasteful number, since it uses less digits than its factorization.

79439976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 135 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 79439976 is about 8912.9106357014. The cubic root of 79439976 is about 429.8791367542.

The spelling of 79439976 in words is "seventy-nine million, four hundred thirty-nine thousand, nine hundred seventy-six".