444616213 has 2 divisors, whose sum is σ = 444616214. Its totient is φ = 444616212.

The previous prime is 444616201. The next prime is 444616217. The reversal of 444616213 is 312616444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331895524 + 112720689 = 18218^2 + 10617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444616213 is a prime.

It is a super-2 number, since 2×444616213² = 395367153724922738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444616217) 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, 222308106 + 222308107.

It is an arithmetic number, because the mean of its divisors is an integer number (222308107).

Almost surely, 2^444616213 is an apocalyptic number.

It is an amenable number.

444616213 is a deficient number, since it is larger than the sum of its proper divisors (1).

444616213 is an equidigital number, since it uses as much as digits as its factorization.

444616213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 444616213 is about 21085.9245232454. The cubic root of 444616213 is about 763.2411286623.

The spelling of 444616213 in words is "four hundred forty-four million, six hundred sixteen thousand, two hundred thirteen".