444243491 has 2 divisors, whose sum is σ = 444243492. Its totient is φ = 444243490.

The previous prime is 444243479. The next prime is 444243511. The reversal of 444243491 is 194342444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444243491 - 2¹⁰ = 444242467 is a prime.

It is not a weakly prime, because it can be changed into another prime (444243791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222121745 + 222121746.

It is an arithmetic number, because the mean of its divisors is an integer number (222121746).

Almost surely, 2^444243491 is an apocalyptic number.

444243491 is a deficient number, since it is larger than the sum of its proper divisors (1).

444243491 is an equidigital number, since it uses as much as digits as its factorization.

444243491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 35.

The square root of 444243491 is about 21077.0844995222. The cubic root of 444243491 is about 763.0277938947.

The spelling of 444243491 in words is "four hundred forty-four million, two hundred forty-three thousand, four hundred ninety-one".