79208641 has 4 divisors (see below), whose sum is σ = 79226500. Its totient is φ = 79190784.

The previous prime is 79208557. The next prime is 79208669. The reversal of 79208641 is 14680297.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6890625 + 72318016 = 2625^2 + 8504^2 .

It is a cyclic number.

It is not a de Polignac number, because 79208641 - 2¹¹ = 79206593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79208641.

It is not an unprimeable number, because it can be changed into a prime (79208671) 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, 3385 + ... + 13033.

It is an arithmetic number, because the mean of its divisors is an integer number (19806625).

Almost surely, 2^79208641 is an apocalyptic number.

It is an amenable number.

79208641 is a deficient number, since it is larger than the sum of its proper divisors (17859).

79208641 is an equidigital number, since it uses as much as digits as its factorization.

79208641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17858.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 79208641 is about 8899.9236513579. The cubic root of 79208641 is about 429.4614512554.

It can be divided in two parts, 7920 and 8641, that added together give a palindrome (16561).

The spelling of 79208641 in words is "seventy-nine million, two hundred eight thousand, six hundred forty-one".