444623 has 2 divisors, whose sum is σ = 444624. Its totient is φ = 444622.

The previous prime is 444607. The next prime is 444637. The reversal of 444623 is 326444.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444623 - 2⁴ = 444607 is a prime.

It is a super-2 number, since 2×444623² = 395379224258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222311 + 222312.

It is an arithmetic number, because the mean of its divisors is an integer number (222312).

2⁴⁴⁴⁶²³ is an apocalyptic number.

444623 is a deficient number, since it is larger than the sum of its proper divisors (1).

444623 is an equidigital number, since it uses as much as digits as its factorization.

444623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 23.

The square root of 444623 is about 666.8005698858. The cubic root of 444623 is about 76.3245012230.

It can be divided in two parts, 44462 and 3, that multiplied together give a triangular number (133386 = T₅₁₆).

The spelling of 444623 in words is "four hundred forty-four thousand, six hundred twenty-three".