79719642 has 12 divisors (see below), whose sum is σ = 172725930. Its totient is φ = 26573208.

The previous prime is 79719641. The next prime is 79719659. The reversal of 79719642 is 24691797.

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 5948721 = 8589^2 + 2439^2 .

It is not an unprimeable number, because it can be changed into a prime (79719641) 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, 2214417 + ... + 2214452.

Almost surely, 2^79719642 is an apocalyptic number.

79719642 is an abundant number, since it is smaller than the sum of its proper divisors (93006288).

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

79719642 is a wasteful number, since it uses less digits than its factorization.

79719642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428877 (or 4428874 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 79719642 is about 8928.5856662744. The cubic root of 79719642 is about 430.3830047059.

The spelling of 79719642 in words is "seventy-nine million, seven hundred nineteen thousand, six hundred forty-two".