444342389 has 2 divisors, whose sum is σ = 444342390. Its totient is φ = 444342388.

The previous prime is 444342383. The next prime is 444342403. The reversal of 444342389 is 983243444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229280164 + 215062225 = 15142^2 + 14665^2 .

It is a cyclic number.

It is not a de Polignac number, because 444342389 - 2²⁰ = 443293813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444342383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222171194 + 222171195.

It is an arithmetic number, because the mean of its divisors is an integer number (222171195).

Almost surely, 2^444342389 is an apocalyptic number.

It is an amenable number.

444342389 is a deficient number, since it is larger than the sum of its proper divisors (1).

444342389 is an equidigital number, since it uses as much as digits as its factorization.

444342389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 41.

The square root of 444342389 is about 21079.4304714335. The cubic root of 444342389 is about 763.0844117370.

The spelling of 444342389 in words is "four hundred forty-four million, three hundred forty-two thousand, three hundred eighty-nine".