444400219 has 2 divisors, whose sum is σ = 444400220. Its totient is φ = 444400218.

The previous prime is 444400171. The next prime is 444400249. The reversal of 444400219 is 912004444.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444400219 is a prime.

It is a super-2 number, since 2×444400219² = 394983109294495922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (444400249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222200109 + 222200110.

It is an arithmetic number, because the mean of its divisors is an integer number (222200110).

Almost surely, 2^444400219 is an apocalyptic number.

444400219 is a deficient number, since it is larger than the sum of its proper divisors (1).

444400219 is an equidigital number, since it uses as much as digits as its factorization.

444400219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 444400219 is about 21080.8021431823. The cubic root of 444400219 is about 763.1175147812.

The spelling of 444400219 in words is "four hundred forty-four million, four hundred thousand, two hundred nineteen".