456567989 has 2 divisors, whose sum is σ = 456567990. Its totient is φ = 456567988.

The previous prime is 456567971. The next prime is 456568027. The reversal of 456567989 is 989765654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423124900 + 33443089 = 20570^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 456567989 - 2²⁰ = 455519413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456567389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228283994 + 228283995.

It is an arithmetic number, because the mean of its divisors is an integer number (228283995).

Almost surely, 2^456567989 is an apocalyptic number.

It is an amenable number.

456567989 is a deficient number, since it is larger than the sum of its proper divisors (1).

456567989 is an equidigital number, since it uses as much as digits as its factorization.

456567989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 59.

The square root of 456567989 is about 21367.4516262469. The cubic root of 456567989 is about 770.0196706056.

The spelling of 456567989 in words is "four hundred fifty-six million, five hundred sixty-seven thousand, nine hundred eighty-nine".