944001221 has 4 divisors (see below), whose sum is σ = 944193600. Its totient is φ = 943808844.

The previous prime is 944001217. The next prime is 944001269. The reversal of 944001221 is 122100449.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122100449 = 7673 ⋅15913.

It is a cyclic number.

It is not a de Polignac number, because 944001221 - 2² = 944001217 is a prime.

It is a super-2 number, since 2×944001221² = 1782276610498981682, which contains 22 as substring.

It is a Duffinian number.

944001221 is a modest number, since divided by 1221 gives 944 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944001521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 88631 + ... + 98708.

It is an arithmetic number, because the mean of its divisors is an integer number (236048400).

Almost surely, 2^944001221 is an apocalyptic number.

It is an amenable number.

944001221 is a deficient number, since it is larger than the sum of its proper divisors (192379).

944001221 is a wasteful number, since it uses less digits than its factorization.

944001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192378.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 944001221 is about 30724.6028615505. The cubic root of 944001221 is about 980.9740492456.

The spelling of 944001221 in words is "nine hundred forty-four million, one thousand, two hundred twenty-one".