309272445 has 16 divisors (see below), whose sum is σ = 549817920. Its totient is φ = 164945232.

The previous prime is 309272401. The next prime is 309272459. The reversal of 309272445 is 544272903.

It is not a de Polignac number, because 309272445 - 2⁸ = 309272189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145319 + ... + 1145588.

It is an arithmetic number, because the mean of its divisors is an integer number (34363620).

Almost surely, 2^309272445 is an apocalyptic number.

It is an amenable number.

309272445 is a deficient number, since it is larger than the sum of its proper divisors (240545475).

309272445 is a wasteful number, since it uses less digits than its factorization.

309272445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290921 (or 2290915 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 309272445 is about 17586.1435511030. The cubic root of 309272445 is about 676.2600660428.

The spelling of 309272445 in words is "three hundred nine million, two hundred seventy-two thousand, four hundred forty-five".