9044591021 has 16 divisors (see below), whose sum is σ = 9591825600. Its totient is φ = 8513366400.

The previous prime is 9044590999. The next prime is 9044591089. The reversal of 9044591021 is 1201954409.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9044591021 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 (9044591221) 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, 2589086 + ... + 2592576.

It is an arithmetic number, because the mean of its divisors is an integer number (599489100).

Almost surely, 2^9044591021 is an apocalyptic number.

It is an amenable number.

9044591021 is a deficient number, since it is larger than the sum of its proper divisors (547234579).

9044591021 is a wasteful number, since it uses less digits than its factorization.

9044591021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9044591021 is about 95103.0547406339. The cubic root of 9044591021 is about 2083.5134637267.

The spelling of 9044591021 in words is "nine billion, forty-four million, five hundred ninety-one thousand, twenty-one".