309069684 has 72 divisors (see below), whose sum is σ = 974046528. Its totient is φ = 80277120.

The previous prime is 309069647. The next prime is 309069689. The reversal of 309069684 is 486960903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309069689) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 52977 + ... + 58520.

It is an arithmetic number, because the mean of its divisors is an integer number (13528424).

Almost surely, 2^309069684 is an apocalyptic number.

It is an amenable number.

309069684 is an abundant number, since it is smaller than the sum of its proper divisors (664976844).

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

309069684 is a wasteful number, since it uses less digits than its factorization.

309069684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111525 (or 111520 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 309069684 is about 17580.3778116399. The cubic root of 309069684 is about 676.1122469211.

The spelling of 309069684 in words is "three hundred nine million, sixty-nine thousand, six hundred eighty-four".