445089901 has 2 divisors, whose sum is σ = 445089902. Its totient is φ = 445089900.

The previous prime is 445089889. The next prime is 445089929. The reversal of 445089901 is 109980544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379236676 + 65853225 = 19474^2 + 8115^2 .

It is a cyclic number.

It is not a de Polignac number, because 445089901 - 2⁷ = 445089773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445089961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222544950 + 222544951.

It is an arithmetic number, because the mean of its divisors is an integer number (222544951).

Almost surely, 2^445089901 is an apocalyptic number.

It is an amenable number.

445089901 is a deficient number, since it is larger than the sum of its proper divisors (1).

445089901 is an equidigital number, since it uses as much as digits as its factorization.

445089901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 445089901 is about 21097.1538601774. The cubic root of 445089901 is about 763.5120813300.

The spelling of 445089901 in words is "four hundred forty-five million, eighty-nine thousand, nine hundred one".