309799344 has 40 divisors (see below), whose sum is σ = 827915760. Its totient is φ = 99705088.

The previous prime is 309799339. The next prime is 309799379. The reversal of 309799344 is 443997903.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 309799293 and 309799302.

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, 109887 + ... + 112670.

It is an arithmetic number, because the mean of its divisors is an integer number (20697894).

Almost surely, 2^309799344 is an apocalyptic number.

It is an amenable number.

309799344 is an abundant number, since it is smaller than the sum of its proper divisors (518116416).

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

309799344 is a wasteful number, since it uses less digits than its factorization.

309799344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222597 (or 222591 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 48.

The square root of 309799344 is about 17601.1176917831. The cubic root of 309799344 is about 676.6438900770.

The spelling of 309799344 in words is "three hundred nine million, seven hundred ninety-nine thousand, three hundred forty-four".