445284989 has 2 divisors, whose sum is σ = 445284990. Its totient is φ = 445284988.

The previous prime is 445284941. The next prime is 445285013. The reversal of 445284989 is 989482544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444492889 + 792100 = 21083^2 + 890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445284989 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445284989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445284929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222642494 + 222642495.

It is an arithmetic number, because the mean of its divisors is an integer number (222642495).

Almost surely, 2^445284989 is an apocalyptic number.

It is an amenable number.

445284989 is a deficient number, since it is larger than the sum of its proper divisors (1).

445284989 is an equidigital number, since it uses as much as digits as its factorization.

445284989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 53.

The square root of 445284989 is about 21101.7769157007. The cubic root of 445284989 is about 763.6236170650.

The spelling of 445284989 in words is "four hundred forty-five million, two hundred eighty-four thousand, nine hundred eighty-nine".