313439999 has 4 divisors (see below), whose sum is σ = 331877664. Its totient is φ = 295002336.

The previous prime is 313439989. The next prime is 313440031. The reversal of 313439999 is 999934313.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 313439999 - 2⁴ = 313439983 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 (313439969) 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, 9218807 + ... + 9218840.

It is an arithmetic number, because the mean of its divisors is an integer number (82969416).

Almost surely, 2^313439999 is an apocalyptic number.

313439999 is a deficient number, since it is larger than the sum of its proper divisors (18437665).

313439999 is a wasteful number, since it uses less digits than its factorization.

313439999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437664.

The product of its digits is 708588, while the sum is 50.

The square root of 313439999 is about 17704.2367528228. The cubic root of 313439999 is about 679.2841363516.

The spelling of 313439999 in words is "three hundred thirteen million, four hundred thirty-nine thousand, nine hundred ninety-nine".