1044086621 has 2 divisors, whose sum is σ = 1044086622. Its totient is φ = 1044086620.

The previous prime is 1044086579. The next prime is 1044086627. The reversal of 1044086621 is 1266804401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003305625 + 40780996 = 31675^2 + 6386^2 .

It is an emirp because it is prime and its reverse (1266804401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1044086621 - 2¹⁸ = 1043824477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044086627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522043310 + 522043311.

It is an arithmetic number, because the mean of its divisors is an integer number (522043311).

Almost surely, 2^1044086621 is an apocalyptic number.

It is an amenable number.

1044086621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044086621 is an equidigital number, since it uses as much as digits as its factorization.

1044086621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1044086621 is about 32312.3292413283. The cubic root of 1044086621 is about 1014.4847202145.

The spelling of 1044086621 in words is "one billion, forty-four million, eighty-six thousand, six hundred twenty-one".