79924555 has 4 divisors (see below), whose sum is σ = 95909472. Its totient is φ = 63939640.

The previous prime is 79924553. The next prime is 79924591. The reversal of 79924555 is 55542997.

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

It is not a de Polignac number, because 79924555 - 2¹ = 79924553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79924553) 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, 7992451 + ... + 7992460.

It is an arithmetic number, because the mean of its divisors is an integer number (23977368).

Almost surely, 2^79924555 is an apocalyptic number.

79924555 is a deficient number, since it is larger than the sum of its proper divisors (15984917).

79924555 is a wasteful number, since it uses less digits than its factorization.

79924555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984916.

The product of its digits is 567000, while the sum is 46.

The square root of 79924555 is about 8940.0534114736. The cubic root of 79924555 is about 430.7514443001.

The spelling of 79924555 in words is "seventy-nine million, nine hundred twenty-four thousand, five hundred fifty-five".