944812221 has 16 divisors (see below), whose sum is σ = 1326835200. Its totient is φ = 596371248.

The previous prime is 944812207. The next prime is 944812223. The reversal of 944812221 is 122218449.

It is not a de Polignac number, because 944812221 - 2¹⁴ = 944795837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944812223) 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, 120400 + ... + 128006.

It is an arithmetic number, because the mean of its divisors is an integer number (82927200).

Almost surely, 2^944812221 is an apocalyptic number.

It is an amenable number.

944812221 is a deficient number, since it is larger than the sum of its proper divisors (382022979).

944812221 is a wasteful number, since it uses less digits than its factorization.

944812221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808.

The product of its digits is 9216, while the sum is 33.

The square root of 944812221 is about 30737.7979204757. The cubic root of 944812221 is about 981.2548900672.

The spelling of 944812221 in words is "nine hundred forty-four million, eight hundred twelve thousand, two hundred twenty-one".