309830404 has 27 divisors (see below), whose sum is σ = 587987967. Its totient is φ = 142787424.

The previous prime is 309830393. The next prime is 309830413. The reversal of 309830404 is 404038903.

The square root of 309830404 is 17602.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 30272004 + 279558400 = 5502^2 + 16720^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 457314 + ... + 457990.

Almost surely, 2^309830404 is an apocalyptic number.

309830404 is the 17602-nd square number.

It is an amenable number.

309830404 is a deficient number, since it is larger than the sum of its proper divisors (278157563).

309830404 is an equidigital number, since it uses as much as digits as its factorization.

309830404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The cubic root of 309830404 is about 676.6665024091. Note that the first 3 decimals are identical.

The spelling of 309830404 in words is "three hundred nine million, eight hundred thirty thousand, four hundred four".