309829084 has 12 divisors (see below), whose sum is σ = 544471200. Its totient is φ = 154265888.

The previous prime is 309829081. The next prime is 309829099. The reversal of 309829084 is 480928903.

It is a happy number.

It is a super-2 number, since 2×309829084² = 191988122584558112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 309829084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309829081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161089 + ... + 163000.

It is an arithmetic number, because the mean of its divisors is an integer number (45372600).

Almost surely, 2^309829084 is an apocalyptic number.

It is an amenable number.

309829084 is a deficient number, since it is larger than the sum of its proper divisors (234642116).

309829084 is a wasteful number, since it uses less digits than its factorization.

309829084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324332 (or 324330 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 309829084 is about 17601.9625042209. The cubic root of 309829084 is about 676.6655414521.

The spelling of 309829084 in words is "three hundred nine million, eight hundred twenty-nine thousand, eighty-four".