9044666021 has 16 divisors (see below), whose sum is σ = 9346584576. Its totient is φ = 8745947136.

The previous prime is 9044666011. The next prime is 9044666039. The reversal of 9044666021 is 1206664409.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9044666021 - 2¹⁸ = 9044403877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9044666011) 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, 5771180 + ... + 5772746.

It is an arithmetic number, because the mean of its divisors is an integer number (584161536).

Almost surely, 2^9044666021 is an apocalyptic number.

It is an amenable number.

9044666021 is a deficient number, since it is larger than the sum of its proper divisors (301918555).

9044666021 is a wasteful number, since it uses less digits than its factorization.

9044666021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 9044666021 is about 95103.4490489173. The cubic root of 9044666021 is about 2083.5192227149.

The spelling of 9044666021 in words is "nine billion, forty-four million, six hundred sixty-six thousand, twenty-one".