309944945994 has 16 divisors (see below), whose sum is σ = 628381535232. Its totient is φ = 101899708128.

The previous prime is 309944945977. The next prime is 309944946001. The reversal of 309944945994 is 499549449903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353817994 + ... + 353818869.

It is an arithmetic number, because the mean of its divisors is an integer number (39273845952).

Almost surely, 2^309944945994 is an apocalyptic number.

309944945994 is an abundant number, since it is smaller than the sum of its proper divisors (318436589238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309944945994 is a wasteful number, since it uses less digits than its factorization.

309944945994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707636941.

The product of its (nonzero) digits is 226748160, while the sum is 69.

The spelling of 309944945994 in words is "three hundred nine billion, nine hundred forty-four million, nine hundred forty-five thousand, nine hundred ninety-four".