79690423 has 4 divisors (see below), whose sum is σ = 83155248. Its totient is φ = 76225600.

The previous prime is 79690421. The next prime is 79690451. The reversal of 79690423 is 32409697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32409697 = 281 ⋅115337.

It is a cyclic number.

It is not a de Polignac number, because 79690423 - 2¹ = 79690421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79690421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732378 + ... + 1732423.

It is an arithmetic number, because the mean of its divisors is an integer number (20788812).

Almost surely, 2^79690423 is an apocalyptic number.

79690423 is a deficient number, since it is larger than the sum of its proper divisors (3464825).

79690423 is a wasteful number, since it uses less digits than its factorization.

79690423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464824.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 79690423 is about 8926.9492549247. The cubic root of 79690423 is about 430.3304166720.

It can be divided in two parts, 796 and 90423, that added together give a palindrome (91219).

The spelling of 79690423 in words is "seventy-nine million, six hundred ninety thousand, four hundred twenty-three".