77313999 has 8 divisors (see below), whose sum is σ = 117811840. Its totient is φ = 44179416.

The previous prime is 77313989. The next prime is 77314001. The reversal of 77313999 is 99931377.

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

It is not a de Polignac number, because 77313999 - 2⁹ = 77313487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77313949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840789 + ... + 1840830.

It is an arithmetic number, because the mean of its divisors is an integer number (14726480).

Almost surely, 2^77313999 is an apocalyptic number.

77313999 is a deficient number, since it is larger than the sum of its proper divisors (40497841).

77313999 is a wasteful number, since it uses less digits than its factorization.

77313999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681629.

The product of its digits is 321489, while the sum is 48.

The square root of 77313999 is about 8792.8379377764. The cubic root of 77313999 is about 426.0095933390.

The spelling of 77313999 in words is "seventy-seven million, three hundred thirteen thousand, nine hundred ninety-nine".