444021377 has 2 divisors, whose sum is σ = 444021378. Its totient is φ = 444021376.

The previous prime is 444021373. The next prime is 444021467. The reversal of 444021377 is 773120444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354983281 + 89038096 = 18841^2 + 9436^2 .

It is a cyclic number.

It is not a de Polignac number, because 444021377 - 2² = 444021373 is a prime.

It is a super-2 number, since 2×444021377² = 394309966465952258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (444021373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222010688 + 222010689.

It is an arithmetic number, because the mean of its divisors is an integer number (222010689).

Almost surely, 2^444021377 is an apocalyptic number.

It is an amenable number.

444021377 is a deficient number, since it is larger than the sum of its proper divisors (1).

444021377 is an equidigital number, since it uses as much as digits as its factorization.

444021377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 444021377 is about 21071.8147533619. The cubic root of 444021377 is about 762.9006058307.

The spelling of 444021377 in words is "four hundred forty-four million, twenty-one thousand, three hundred seventy-seven".