444450639 has 8 divisors (see below), whose sum is σ = 593471232. Its totient is φ = 295865240.

The previous prime is 444450637. The next prime is 444450649. The reversal of 444450639 is 936054444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444450639 - 2¹ = 444450637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444450597 and 444450606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444450637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106407 + ... + 110504.

It is an arithmetic number, because the mean of its divisors is an integer number (74183904).

Almost surely, 2^444450639 is an apocalyptic number.

444450639 is a deficient number, since it is larger than the sum of its proper divisors (149020593).

444450639 is a wasteful number, since it uses less digits than its factorization.

444450639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217597.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 444450639 is about 21081.9979840621. The cubic root of 444450639 is about 763.1463738504.

The spelling of 444450639 in words is "four hundred forty-four million, four hundred fifty thousand, six hundred thirty-nine".