310000399979 has 4 divisors (see below), whose sum is σ = 310002217560. Its totient is φ = 309998582400.

The previous prime is 310000399949. The next prime is 310000399981. The reversal of 310000399979 is 979993000013.

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 310000399979 - 2¹⁶ = 310000334443 is a prime.

It is a super-2 number, since 2×310000399979² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (310000399949) 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, 622997 + ... + 1004054.

It is an arithmetic number, because the mean of its divisors is an integer number (77500554390).

Almost surely, 2^310000399979 is an apocalyptic number.

310000399979 is a deficient number, since it is larger than the sum of its proper divisors (1817581).

310000399979 is a wasteful number, since it uses less digits than its factorization.

310000399979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817580.

The product of its (nonzero) digits is 413343, while the sum is 50.

The spelling of 310000399979 in words is "three hundred ten billion, three hundred ninety-nine thousand, nine hundred seventy-nine".