8840905221 has 16 divisors (see below), whose sum is σ = 12451112960. Its totient is φ = 5571160560.

The previous prime is 8840905201. The next prime is 8840905223. The reversal of 8840905221 is 1225090488.

It is not a de Polignac number, because 8840905221 - 2⁵ = 8840905189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8840905221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8840905223) 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, 1101391 + ... + 1109388.

It is an arithmetic number, because the mean of its divisors is an integer number (778194560).

Almost surely, 2^8840905221 is an apocalyptic number.

It is an amenable number.

8840905221 is a deficient number, since it is larger than the sum of its proper divisors (3610207739).

8840905221 is a wasteful number, since it uses less digits than its factorization.

8840905221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210856.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 8840905221 is about 94026.0879809428. The cubic root of 8840905221 is about 2067.7541997444.

The spelling of 8840905221 in words is "eight billion, eight hundred forty million, nine hundred five thousand, two hundred twenty-one".