45198889 has 2 divisors, whose sum is σ = 45198890. Its totient is φ = 45198888.

The previous prime is 45198871. The next prime is 45198911. The reversal of 45198889 is 98889154.

45198889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44782864 + 416025 = 6692^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 45198889 - 2¹⁷ = 45067817 is a prime.

It is not a weakly prime, because it can be changed into another prime (45198809) 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, 22599444 + 22599445.

It is an arithmetic number, because the mean of its divisors is an integer number (22599445).

Almost surely, 2^45198889 is an apocalyptic number.

It is an amenable number.

45198889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45198889 is an equidigital number, since it uses as much as digits as its factorization.

45198889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 52.

The square root of 45198889 is about 6723.0118994391. The cubic root of 45198889 is about 356.2125802904.

The spelling of 45198889 in words is "forty-five million, one hundred ninety-eight thousand, eight hundred eighty-nine".