1044420997 has 2 divisors, whose sum is σ = 1044420998. Its totient is φ = 1044420996.

The previous prime is 1044420989. The next prime is 1044421039. The reversal of 1044420997 is 7990244401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037419681 + 7001316 = 32209^2 + 2646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044420997 - 2³ = 1044420989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044420967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522210498 + 522210499.

It is an arithmetic number, because the mean of its divisors is an integer number (522210499).

Almost surely, 2^1044420997 is an apocalyptic number.

It is an amenable number.

1044420997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044420997 is an equidigital number, since it uses as much as digits as its factorization.

1044420997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1044420997 is about 32317.5029511873. The cubic root of 1044420997 is about 1014.5930072506.

The spelling of 1044420997 in words is "one billion, forty-four million, four hundred twenty thousand, nine hundred ninety-seven".