309434668 has 12 divisors (see below), whose sum is σ = 541879632. Its totient is φ = 154611920.

The previous prime is 309434659. The next prime is 309434681. The reversal of 309434668 is 866434903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19555 + ... + 31642.

It is an arithmetic number, because the mean of its divisors is an integer number (45156636).

Almost surely, 2^309434668 is an apocalyptic number.

It is an amenable number.

309434668 is a deficient number, since it is larger than the sum of its proper divisors (232444964).

309434668 is a wasteful number, since it uses less digits than its factorization.

309434668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52712 (or 52710 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 309434668 is about 17590.7551856081. The cubic root of 309434668 is about 676.3782851760.

The spelling of 309434668 in words is "three hundred nine million, four hundred thirty-four thousand, six hundred sixty-eight".