455493911989 has 2 divisors, whose sum is σ = 455493911990. Its totient is φ = 455493911988.

The previous prime is 455493911941. The next prime is 455493912007. The reversal of 455493911989 is 989119394554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451113722500 + 4380189489 = 671650^2 + 66183^2 .

It is a cyclic number.

It is not a de Polignac number, because 455493911989 - 2⁷ = 455493911861 is a prime.

It is a super-2 number, since 2×455493911989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455493911489) 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, 227746955994 + 227746955995.

It is an arithmetic number, because the mean of its divisors is an integer number (227746955995).

Almost surely, 2^455493911989 is an apocalyptic number.

It is an amenable number.

455493911989 is a deficient number, since it is larger than the sum of its proper divisors (1).

455493911989 is an equidigital number, since it uses as much as digits as its factorization.

455493911989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62985600, while the sum is 67.

The spelling of 455493911989 in words is "four hundred fifty-five billion, four hundred ninety-three million, nine hundred eleven thousand, nine hundred eighty-nine".