79144891 has 16 divisors (see below), whose sum is σ = 94302208. Its totient is φ = 64994400.

The previous prime is 79144873. The next prime is 79144903. The reversal of 79144891 is 19844197.

It is a cyclic number.

It is not a de Polignac number, because 79144891 - 2⁹ = 79144379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79144831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20581 + ... + 24121.

It is an arithmetic number, because the mean of its divisors is an integer number (5893888).

Almost surely, 2^79144891 is an apocalyptic number.

79144891 is a deficient number, since it is larger than the sum of its proper divisors (15157317).

79144891 is a wasteful number, since it uses less digits than its factorization.

79144891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682.

The product of its digits is 72576, while the sum is 43.

The square root of 79144891 is about 8896.3414390411. The cubic root of 79144891 is about 429.3462049244.

The spelling of 79144891 in words is "seventy-nine million, one hundred forty-four thousand, eight hundred ninety-one".