8044877021 has 2 divisors, whose sum is σ = 8044877022. Its totient is φ = 8044877020.

The previous prime is 8044877011. The next prime is 8044877041. The reversal of 8044877021 is 1207784408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5024824996 + 3020052025 = 70886^2 + 54955^2 .

It is a cyclic number.

It is not a de Polignac number, because 8044877021 - 2²² = 8040682717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8044877021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8044877011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4022438510 + 4022438511.

It is an arithmetic number, because the mean of its divisors is an integer number (4022438511).

Almost surely, 2^8044877021 is an apocalyptic number.

It is an amenable number.

8044877021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8044877021 is an equidigital number, since it uses as much as digits as its factorization.

8044877021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 8044877021 is about 89693.2384352355. The cubic root of 8044877021 is about 2003.7327805903.

The spelling of 8044877021 in words is "eight billion, forty-four million, eight hundred seventy-seven thousand, twenty-one".