309199074 has 16 divisors (see below), whose sum is σ = 645285312. Its totient is φ = 98585168.

The previous prime is 309199067. The next prime is 309199087. The reversal of 309199074 is 470991903.

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, 1120149 + ... + 1120424.

It is an arithmetic number, because the mean of its divisors is an integer number (40330332).

Almost surely, 2^309199074 is an apocalyptic number.

309199074 is an abundant number, since it is smaller than the sum of its proper divisors (336086238).

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

309199074 is a wasteful number, since it uses less digits than its factorization.

309199074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240601.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 309199074 is about 17584.0573816170. The cubic root of 309199074 is about 676.2065837466.

It can be divided in two parts, 30919 and 9074, that added together give a palindrome (39993).

The spelling of 309199074 in words is "three hundred nine million, one hundred ninety-nine thousand, seventy-four".