79436845 has 4 divisors (see below), whose sum is σ = 95324220. Its totient is φ = 63549472.

The previous prime is 79436843. The next prime is 79436857. The reversal of 79436845 is 54863497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54863497 = 13 ⋅4220269.

It can be written as a sum of positive squares in 2 ways, for example, as 26409321 + 53027524 = 5139^2 + 7282^2 .

It is a cyclic number.

It is not a de Polignac number, because 79436845 - 2¹ = 79436843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79436795 and 79436804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79436843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7943680 + ... + 7943689.

It is an arithmetic number, because the mean of its divisors is an integer number (23831055).

Almost surely, 2^79436845 is an apocalyptic number.

It is an amenable number.

79436845 is a deficient number, since it is larger than the sum of its proper divisors (15887375).

79436845 is a wasteful number, since it uses less digits than its factorization.

79436845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15887374.

The product of its digits is 725760, while the sum is 46.

The square root of 79436845 is about 8912.7349898895. The cubic root of 79436845 is about 429.8734890130.

The spelling of 79436845 in words is "seventy-nine million, four hundred thirty-six thousand, eight hundred forty-five".