455220889 has 2 divisors, whose sum is σ = 455220890. Its totient is φ = 455220888.

The previous prime is 455220881. The next prime is 455220911. The reversal of 455220889 is 988022554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239630400 + 215590489 = 15480^2 + 14683^2 .

It is a cyclic number.

It is not a de Polignac number, because 455220889 - 2³ = 455220881 is a prime.

It is not a weakly prime, because it can be changed into another prime (455220881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227610444 + 227610445.

It is an arithmetic number, because the mean of its divisors is an integer number (227610445).

Almost surely, 2^455220889 is an apocalyptic number.

It is an amenable number.

455220889 is a deficient number, since it is larger than the sum of its proper divisors (1).

455220889 is an equidigital number, since it uses as much as digits as its factorization.

455220889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 455220889 is about 21335.9060974687. The cubic root of 455220889 is about 769.2616123871.

The spelling of 455220889 in words is "four hundred fifty-five million, two hundred twenty thousand, eight hundred eighty-nine".