444490919 has 2 divisors, whose sum is σ = 444490920. Its totient is φ = 444490918.

The previous prime is 444490897. The next prime is 444490933. The reversal of 444490919 is 919094444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444490919 - 2¹⁶ = 444425383 is a prime.

It is a super-2 number, since 2×444490919² = 395144354146929122, which contains 22 as substring.

It is equal to p_23576489 and since 444490919 and 23576489 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444490919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444490819) 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, 222245459 + 222245460.

It is an arithmetic number, because the mean of its divisors is an integer number (222245460).

Almost surely, 2^444490919 is an apocalyptic number.

444490919 is a deficient number, since it is larger than the sum of its proper divisors (1).

444490919 is an equidigital number, since it uses as much as digits as its factorization.

444490919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 444490919 is about 21082.9532798420. The cubic root of 444490919 is about 763.1694274846.

The spelling of 444490919 in words is "four hundred forty-four million, four hundred ninety thousand, nine hundred nineteen".