79789536 has 144 divisors (see below), whose sum is σ = 243629568. Its totient is φ = 25660800.

The previous prime is 79789513. The next prime is 79789547. The reversal of 79789536 is 63598797.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240891 + ... + 241221.

It is an arithmetic number, because the mean of its divisors is an integer number (1691872).

Almost surely, 2^79789536 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 79789536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121814784).

79789536 is an abundant number, since it is smaller than the sum of its proper divisors (163840032).

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

79789536 is a wasteful number, since it uses less digits than its factorization.

79789536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 367 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 79789536 is about 8932.4988664987. The cubic root of 79789536 is about 430.5087470451.

The spelling of 79789536 in words is "seventy-nine million, seven hundred eighty-nine thousand, five hundred thirty-six".