309224099 has 4 divisors (see below), whose sum is σ = 313579440. Its totient is φ = 304868760.

The previous prime is 309224081. The next prime is 309224147. The reversal of 309224099 is 990422903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990422903 = 619 ⋅1600037.

It is a cyclic number.

It is not a de Polignac number, because 309224099 - 2²⁰ = 308175523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309224599) 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, 2177564 + ... + 2177705.

It is an arithmetic number, because the mean of its divisors is an integer number (78394860).

Almost surely, 2^309224099 is an apocalyptic number.

309224099 is a deficient number, since it is larger than the sum of its proper divisors (4355341).

309224099 is an equidigital number, since it uses as much as digits as its factorization.

309224099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355340.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 309224099 is about 17584.7689492925. The cubic root of 309224099 is about 676.2248261613.

The spelling of 309224099 in words is "three hundred nine million, two hundred twenty-four thousand, ninety-nine".