444499623 has 16 divisors (see below), whose sum is σ = 693177600. Its totient is φ = 280736280.

The previous prime is 444499613. The next prime is 444499667. The reversal of 444499623 is 326994444.

It is not a de Polignac number, because 444499623 - 2²² = 440305319 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444499603) 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 in 15 ways as a sum of consecutive naturals, for example, 432723 + ... + 433748.

It is an arithmetic number, because the mean of its divisors is an integer number (43323600).

Almost surely, 2^444499623 is an apocalyptic number.

444499623 is a deficient number, since it is larger than the sum of its proper divisors (248677977).

444499623 is a wasteful number, since it uses less digits than its factorization.

444499623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866499 (or 866493 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 444499623 is about 21083.1597015248. The cubic root of 444499623 is about 763.1744089012.

The spelling of 444499623 in words is "four hundred forty-four million, four hundred ninety-nine thousand, six hundred twenty-three".