79144885 has 4 divisors (see below), whose sum is σ = 94973868. Its totient is φ = 63315904.

The previous prime is 79144873. The next prime is 79144903. The reversal of 79144885 is 58844197.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 63888049 = 3906^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 79144885 - 2¹³ = 79136693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7914484 + ... + 7914493.

It is an arithmetic number, because the mean of its divisors is an integer number (23743467).

Almost surely, 2^79144885 is an apocalyptic number.

It is an amenable number.

79144885 is a deficient number, since it is larger than the sum of its proper divisors (15828983).

79144885 is a wasteful number, since it uses less digits than its factorization.

79144885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15828982.

The product of its digits is 322560, while the sum is 46.

The square root of 79144885 is about 8896.3411018238. The cubic root of 79144885 is about 429.3461940747.

The spelling of 79144885 in words is "seventy-nine million, one hundred forty-four thousand, eight hundred eighty-five".