79489519 has 4 divisors (see below), whose sum is σ = 79527744. Its totient is φ = 79451296.

The previous prime is 79489517. The next prime is 79489523. The reversal of 79489519 is 91598497.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79489519 - 2¹ = 79489517 is a prime.

It is a super-2 number, since 2×79489519² = 12637167261702722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79489517) 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, 15802 + ... + 20215.

It is an arithmetic number, because the mean of its divisors is an integer number (19881936).

Almost surely, 2^79489519 is an apocalyptic number.

79489519 is a deficient number, since it is larger than the sum of its proper divisors (38225).

79489519 is a wasteful number, since it uses less digits than its factorization.

79489519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38224.

The product of its digits is 816480, while the sum is 52.

The square root of 79489519 is about 8915.6894853960. The cubic root of 79489519 is about 429.9684833580.

It can be divided in two parts, 79489 and 519, that added together give a palindrome (80008).

The spelling of 79489519 in words is "seventy-nine million, four hundred eighty-nine thousand, five hundred nineteen".