79536442 has 4 divisors (see below), whose sum is σ = 119304666. Its totient is φ = 39768220.

The previous prime is 79536439. The next prime is 79536449. The reversal of 79536442 is 24463597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24463597 = 3359 ⋅7283.

It can be written as a sum of positive squares in only one way, i.e., 77105961 + 2430481 = 8781^2 + 1559^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 79536395 and 79536404.

It is not an unprimeable number, because it can be changed into a prime (79536449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19884109 + ... + 19884112.

Almost surely, 2^79536442 is an apocalyptic number.

79536442 is a deficient number, since it is larger than the sum of its proper divisors (39768224).

79536442 is a wasteful number, since it uses less digits than its factorization.

79536442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39768223.

The product of its digits is 181440, while the sum is 40.

The square root of 79536442 is about 8918.3205818136. The cubic root of 79536442 is about 430.0530707888.

The spelling of 79536442 in words is "seventy-nine million, five hundred thirty-six thousand, four hundred forty-two".