309969922 has 16 divisors (see below), whose sum is σ = 492723000. Its totient is φ = 145989760.

The previous prime is 309969911. The next prime is 309969953. The reversal of 309969922 is 229969903.

It can be written as a sum of positive squares in 4 ways, for example, as 143017681 + 166952241 = 11959^2 + 12921^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62797 + ... + 67552.

Almost surely, 2^309969922 is an apocalyptic number.

309969922 is a deficient number, since it is larger than the sum of its proper divisors (182753078).

309969922 is a wasteful number, since it uses less digits than its factorization.

309969922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130421.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 309969922 is about 17605.9626831366. The cubic root of 309969922 is about 676.7680558060.

The spelling of 309969922 in words is "three hundred nine million, nine hundred sixty-nine thousand, nine hundred twenty-two".