309934764 has 72 divisors (see below), whose sum is σ = 837112640. Its totient is φ = 96399072.

The previous prime is 309934747. The next prime is 309934777. The reversal of 309934764 is 467439903.

309934764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42447 + ... + 49209.

Almost surely, 2^309934764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 309934764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418556320).

309934764 is an abundant number, since it is smaller than the sum of its proper divisors (527177876).

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

309934764 is a wasteful number, since it uses less digits than its factorization.

309934764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6859 (or 6854 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 309934764 is about 17604.9641862743. The cubic root of 309934764 is about 676.7424676126.

The spelling of 309934764 in words is "three hundred nine million, nine hundred thirty-four thousand, seven hundred sixty-four".