444113213 has 2 divisors, whose sum is σ = 444113214. Its totient is φ = 444113212.

The previous prime is 444113209. The next prime is 444113231. The reversal of 444113213 is 312311444.

Together with next prime (444113231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430438009 + 13675204 = 20747^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 444113213 - 2² = 444113209 is a prime.

It is a super-2 number, since 2×444113213² = 394473091922366738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444113203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222056606 + 222056607.

It is an arithmetic number, because the mean of its divisors is an integer number (222056607).

Almost surely, 2^444113213 is an apocalyptic number.

It is an amenable number.

444113213 is a deficient number, since it is larger than the sum of its proper divisors (1).

444113213 is an equidigital number, since it uses as much as digits as its factorization.

444113213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 444113213 is about 21073.9937600826. The cubic root of 444113213 is about 762.9531985766.

Adding to 444113213 its reverse (312311444), we get a palindrome (756424657).

The spelling of 444113213 in words is "four hundred forty-four million, one hundred thirteen thousand, two hundred thirteen".