445523189 has 2 divisors, whose sum is σ = 445523190. Its totient is φ = 445523188.

The previous prime is 445523171. The next prime is 445523207. The reversal of 445523189 is 981325544.

It is a balanced prime because it is at equal distance from previous prime (445523171) and next prime (445523207).

It can be written as a sum of positive squares in only one way, i.e., 425720689 + 19802500 = 20633^2 + 4450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445523189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445523149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222761594 + 222761595.

It is an arithmetic number, because the mean of its divisors is an integer number (222761595).

Almost surely, 2^445523189 is an apocalyptic number.

It is an amenable number.

445523189 is a deficient number, since it is larger than the sum of its proper divisors (1).

445523189 is an equidigital number, since it uses as much as digits as its factorization.

445523189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 445523189 is about 21107.4202355475. The cubic root of 445523189 is about 763.7597566352.

The spelling of 445523189 in words is "four hundred forty-five million, five hundred twenty-three thousand, one hundred eighty-nine".