79162989 has 4 divisors (see below), whose sum is σ = 105550656. Its totient is φ = 52775324.

The previous prime is 79162981. The next prime is 79162997. The reversal of 79162989 is 98926197.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (79162981) and next prime (79162997).

It is a cyclic number.

It is not a de Polignac number, because 79162989 - 2³ = 79162981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79162981) 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, 13193829 + ... + 13193834.

It is an arithmetic number, because the mean of its divisors is an integer number (26387664).

Almost surely, 2^79162989 is an apocalyptic number.

It is an amenable number.

79162989 is a deficient number, since it is larger than the sum of its proper divisors (26387667).

79162989 is a wasteful number, since it uses less digits than its factorization.

79162989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26387666.

The product of its digits is 489888, while the sum is 51.

The square root of 79162989 is about 8897.3585406007. The cubic root of 79162989 is about 429.3789285166.

The spelling of 79162989 in words is "seventy-nine million, one hundred sixty-two thousand, nine hundred eighty-nine".