456538889 has 2 divisors, whose sum is σ = 456538890. Its totient is φ = 456538888.

The previous prime is 456538877. The next prime is 456538919. The reversal of 456538889 is 988835654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412090000 + 44448889 = 20300^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 456538889 - 2⁸ = 456538633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (456508889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228269444 + 228269445.

It is an arithmetic number, because the mean of its divisors is an integer number (228269445).

Almost surely, 2^456538889 is an apocalyptic number.

It is an amenable number.

456538889 is a deficient number, since it is larger than the sum of its proper divisors (1).

456538889 is an equidigital number, since it uses as much as digits as its factorization.

456538889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8294400, while the sum is 56.

The square root of 456538889 is about 21366.7706731738. The cubic root of 456538889 is about 770.0033108308.

The spelling of 456538889 in words is "four hundred fifty-six million, five hundred thirty-eight thousand, eight hundred eighty-nine".