444989911 has 2 divisors, whose sum is σ = 444989912. Its totient is φ = 444989910.

The previous prime is 444989821. The next prime is 444989917. The reversal of 444989911 is 119989444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444989911 - 2²¹ = 442892759 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 (444989917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222494955 + 222494956.

It is an arithmetic number, because the mean of its divisors is an integer number (222494956).

Almost surely, 2^444989911 is an apocalyptic number.

444989911 is a deficient number, since it is larger than the sum of its proper divisors (1).

444989911 is an equidigital number, since it uses as much as digits as its factorization.

444989911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 444989911 is about 21094.7839761397. The cubic root of 444989911 is about 763.4549024017.

The spelling of 444989911 in words is "four hundred forty-four million, nine hundred eighty-nine thousand, nine hundred eleven".