444404423 has 2 divisors, whose sum is σ = 444404424. Its totient is φ = 444404422.

The previous prime is 444404399. The next prime is 444404449. The reversal of 444404423 is 324404444.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444404423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444403423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222202211 + 222202212.

It is an arithmetic number, because the mean of its divisors is an integer number (222202212).

Almost surely, 2^444404423 is an apocalyptic number.

444404423 is a deficient number, since it is larger than the sum of its proper divisors (1).

444404423 is an equidigital number, since it uses as much as digits as its factorization.

444404423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 29.

The square root of 444404423 is about 21080.9018545223. The cubic root of 444404423 is about 763.1199211226.

Adding to 444404423 its reverse (324404444), we get a palindrome (768808867).

The spelling of 444404423 in words is "four hundred forty-four million, four hundred four thousand, four hundred twenty-three".