444662213 has 2 divisors, whose sum is σ = 444662214. Its totient is φ = 444662212.

The previous prime is 444662203. The next prime is 444662221. The reversal of 444662213 is 312266444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410346049 + 34316164 = 20257^2 + 5858^2 .

It is a cyclic number.

It is not a de Polignac number, because 444662213 - 2²⁰ = 443613637 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444662213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444662203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222331106 + 222331107.

It is an arithmetic number, because the mean of its divisors is an integer number (222331107).

Almost surely, 2^444662213 is an apocalyptic number.

It is an amenable number.

444662213 is a deficient number, since it is larger than the sum of its proper divisors (1).

444662213 is an equidigital number, since it uses as much as digits as its factorization.

444662213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 32.

The square root of 444662213 is about 21087.0152700661. The cubic root of 444662213 is about 763.2674494008.

The spelling of 444662213 in words is "four hundred forty-four million, six hundred sixty-two thousand, two hundred thirteen".