79129936 has 30 divisors (see below), whose sum is σ = 160287050. Its totient is φ = 37840704.

The previous prime is 79129931. The next prime is 79129937. The reversal of 79129936 is 63992197.

It can be written as a sum of positive squares in only one way, i.e., 76387600 + 2742336 = 8740^2 + 1656^2 .

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79129931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3790 + ... + 13138.

Almost surely, 2^79129936 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 79129936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80143525).

79129936 is an abundant number, since it is smaller than the sum of its proper divisors (81157114).

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

79129936 is a wasteful number, since it uses less digits than its factorization.

79129936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403 (or 9374 counting only the distinct ones).

The product of its digits is 183708, while the sum is 46.

The square root of 79129936 is about 8895.5008852790. The cubic root of 79129936 is about 429.3191605299.

The spelling of 79129936 in words is "seventy-nine million, one hundred twenty-nine thousand, nine hundred thirty-six".