79867904 has 104 divisors (see below), whose sum is σ = 179284608. Its totient is φ = 35389440.

The previous prime is 79867889. The next prime is 79867919. The reversal of 79867904 is 40976897.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79867889) and next prime (79867919).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2158574 + ... + 2158610.

Almost surely, 2^79867904 is an apocalyptic number.

79867904 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79867904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89642304).

79867904 is an abundant number, since it is smaller than the sum of its proper divisors (99416704).

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

79867904 is a wasteful number, since it uses less digits than its factorization.

79867904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 79867904 is about 8936.8844683144. The cubic root of 79867904 is about 430.6496471829.

The spelling of 79867904 in words is "seventy-nine million, eight hundred sixty-seven thousand, nine hundred four".