244812309 has 16 divisors (see below), whose sum is σ = 373298688. Its totient is φ = 139798512.

The previous prime is 244812307. The next prime is 244812319. The reversal of 244812309 is 903218442.

244812309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 244812309 - 2¹ = 244812307 is a prime.

It is a super-2 number, since 2×244812309² = 119866133275822962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 244812309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244812307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38794 + ... + 44660.

It is an arithmetic number, because the mean of its divisors is an integer number (23331168).

Almost surely, 2^244812309 is an apocalyptic number.

It is an amenable number.

244812309 is a deficient number, since it is larger than the sum of its proper divisors (128486379).

244812309 is a wasteful number, since it uses less digits than its factorization.

244812309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7864.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 244812309 is about 15646.4791247105. The cubic root of 244812309 is about 625.5726455098.

The spelling of 244812309 in words is "two hundred forty-four million, eight hundred twelve thousand, three hundred nine".