444004427 has 2 divisors, whose sum is σ = 444004428. Its totient is φ = 444004426.

The previous prime is 444004391. The next prime is 444004439. The reversal of 444004427 is 724400444.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444004427 - 2²² = 439810123 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444004427.

It is not a weakly prime, because it can be changed into another prime (444009427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222002213 + 222002214.

It is an arithmetic number, because the mean of its divisors is an integer number (222002214).

Almost surely, 2^444004427 is an apocalyptic number.

444004427 is a deficient number, since it is larger than the sum of its proper divisors (1).

444004427 is an equidigital number, since it uses as much as digits as its factorization.

444004427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 29.

The square root of 444004427 is about 21071.4125535048. The cubic root of 444004427 is about 762.8908980925.

The spelling of 444004427 in words is "four hundred forty-four million, four thousand, four hundred twenty-seven".