79899574 has 8 divisors (see below), whose sum is σ = 119981160. Its totient is φ = 39905856.

The previous prime is 79899571. The next prime is 79899583. The reversal of 79899574 is 47599897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79899571) 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, 19644 + ... + 23359.

It is an arithmetic number, because the mean of its divisors is an integer number (14997645).

Almost surely, 2^79899574 is an apocalyptic number.

79899574 is a deficient number, since it is larger than the sum of its proper divisors (40081586).

79899574 is a wasteful number, since it uses less digits than its factorization.

79899574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43934.

The product of its digits is 5715360, while the sum is 58.

The square root of 79899574 is about 8938.6561629811. The cubic root of 79899574 is about 430.7065614598.

The spelling of 79899574 in words is "seventy-nine million, eight hundred ninety-nine thousand, five hundred seventy-four".