79689344 has 128 divisors (see below), whose sum is σ = 198451200. Its totient is φ = 31104000.

The previous prime is 79689341. The next prime is 79689377. The reversal of 79689344 is 44398697.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 79689292 and 79689301.

It is not an unprimeable number, because it can be changed into a prime (79689341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527669 + ... + 527819.

It is an arithmetic number, because the mean of its divisors is an integer number (1550400).

Almost surely, 2^79689344 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 79689344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99225600).

79689344 is an abundant number, since it is smaller than the sum of its proper divisors (118761856).

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

79689344 is a wasteful number, since it uses less digits than its factorization.

79689344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 210 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 79689344 is about 8926.8888197401. Note that the first 4 decimals coincide. The cubic root of 79689344 is about 430.3284744536.

The spelling of 79689344 in words is "seventy-nine million, six hundred eighty-nine thousand, three hundred forty-four".