45894209 has 2 divisors, whose sum is σ = 45894210. Its totient is φ = 45894208.

The previous prime is 45894161. The next prime is 45894217. The reversal of 45894209 is 90249854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45859984 + 34225 = 6772^2 + 185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45894209 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 (45894239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22947104 + 22947105.

It is an arithmetic number, because the mean of its divisors is an integer number (22947105).

Almost surely, 2^45894209 is an apocalyptic number.

It is an amenable number.

45894209 is a deficient number, since it is larger than the sum of its proper divisors (1).

45894209 is an equidigital number, since it uses as much as digits as its factorization.

45894209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 45894209 is about 6774.5264779171. The cubic root of 45894209 is about 358.0298992953.

The spelling of 45894209 in words is "forty-five million, eight hundred ninety-four thousand, two hundred nine".