79901189 has 4 divisors (see below), whose sum is σ = 79983456. Its totient is φ = 79818924.

The previous prime is 79901179. The next prime is 79901203. The reversal of 79901189 is 98110997.

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 a de Polignac number, because none of the positive numbers 2^k-79901189 is a prime.

It is a super-2 number, since 2×79901189² = 12768400007227442, 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 (79901179) 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, 39659 + ... + 41624.

It is an arithmetic number, because the mean of its divisors is an integer number (19995864).

Almost surely, 2^79901189 is an apocalyptic number.

It is an amenable number.

79901189 is a deficient number, since it is larger than the sum of its proper divisors (82267).

79901189 is an equidigital number, since it uses as much as digits as its factorization.

79901189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82266.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 79901189 is about 8938.7465004888. The cubic root of 79901189 is about 430.7094633793.

The spelling of 79901189 in words is "seventy-nine million, nine hundred one thousand, one hundred eighty-nine".