445399841 has 2 divisors, whose sum is σ = 445399842. Its totient is φ = 445399840.

The previous prime is 445399819. The next prime is 445399859. The reversal of 445399841 is 148993544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445378816 + 21025 = 21104^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 445399841 - 2²² = 441205537 is a prime.

It is not a weakly prime, because it can be changed into another prime (445399811) 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, 222699920 + 222699921.

It is an arithmetic number, because the mean of its divisors is an integer number (222699921).

Almost surely, 2^445399841 is an apocalyptic number.

It is an amenable number.

445399841 is a deficient number, since it is larger than the sum of its proper divisors (1).

445399841 is an equidigital number, since it uses as much as digits as its factorization.

445399841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 47.

The square root of 445399841 is about 21104.4981224383. The cubic root of 445399841 is about 763.6892650302.

The spelling of 445399841 in words is "four hundred forty-five million, three hundred ninety-nine thousand, eight hundred forty-one".