79968489 has 4 divisors (see below), whose sum is σ = 106624656. Its totient is φ = 53312324.

The previous prime is 79968487. The next prime is 79968521. The reversal of 79968489 is 98486997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79968489 - 2¹ = 79968487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79968487) 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, 13328079 + ... + 13328084.

It is an arithmetic number, because the mean of its divisors is an integer number (26656164).

Almost surely, 2^79968489 is an apocalyptic number.

It is an amenable number.

79968489 is a deficient number, since it is larger than the sum of its proper divisors (26656167).

79968489 is a wasteful number, since it uses less digits than its factorization.

79968489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26656166.

The product of its digits is 7838208, while the sum is 60.

The square root of 79968489 is about 8942.5102180540. The cubic root of 79968489 is about 430.8303569173.

The spelling of 79968489 in words is "seventy-nine million, nine hundred sixty-eight thousand, four hundred eighty-nine".