79861936 has 120 divisors (see below), whose sum is σ = 199487232. Its totient is φ = 30307200.

The previous prime is 79861933. The next prime is 79861939. The reversal of 79861936 is 63916897.

It is an interprime number because it is at equal distance from previous prime (79861933) and next prime (79861939).

It is a self number, because there is not a number n which added to its sum of digits gives 79861936.

It is not an unprimeable number, because it can be changed into a prime (79861931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 962151 + ... + 962233.

Almost surely, 2^79861936 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 79861936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99743616).

79861936 is an abundant number, since it is smaller than the sum of its proper divisors (119625296).

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

79861936 is a wasteful number, since it uses less digits than its factorization.

79861936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 174 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 79861936 is about 8936.5505649551. The cubic root of 79861936 is about 430.6389203828.

The spelling of 79861936 in words is "seventy-nine million, eight hundred sixty-one thousand, nine hundred thirty-six".