79986132 has 18 divisors (see below), whose sum is σ = 202187258. Its totient is φ = 26662032.

The previous prime is 79986131. The next prime is 79986133. The reversal of 79986132 is 23168997.

It is an interprime number because it is at equal distance from previous prime (79986131) and next prime (79986133).

It can be written as a sum of positive squares in only one way, i.e., 42458256 + 37527876 = 6516^2 + 6126^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79986131) 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, 1110883 + ... + 1110954.

Almost surely, 2^79986132 is an apocalyptic number.

It is an amenable number.

79986132 is an abundant number, since it is smaller than the sum of its proper divisors (122201126).

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

79986132 is a wasteful number, since it uses less digits than its factorization.

79986132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221847 (or 2221842 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 79986132 is about 8943.4966316313. The cubic root of 79986132 is about 430.8620384840.

The spelling of 79986132 in words is "seventy-nine million, nine hundred eighty-six thousand, one hundred thirty-two".