444120889 has 2 divisors, whose sum is σ = 444120890. Its totient is φ = 444120888.

The previous prime is 444120881. The next prime is 444120923. The reversal of 444120889 is 988021444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436475664 + 7645225 = 20892^2 + 2765^2 .

It is a cyclic number.

It is not a de Polignac number, because 444120889 - 2³ = 444120881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (444120881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222060444 + 222060445.

It is an arithmetic number, because the mean of its divisors is an integer number (222060445).

Almost surely, 2^444120889 is an apocalyptic number.

It is an amenable number.

444120889 is a deficient number, since it is larger than the sum of its proper divisors (1).

444120889 is an equidigital number, since it uses as much as digits as its factorization.

444120889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 444120889 is about 21074.1758794976. The cubic root of 444120889 is about 762.9575941487.

The spelling of 444120889 in words is "four hundred forty-four million, one hundred twenty thousand, eight hundred eighty-nine".