444013999 has 16 divisors (see below), whose sum is σ = 530490240. Its totient is φ = 366276960.

The previous prime is 444013991. The next prime is 444014003. The reversal of 444013999 is 999310444.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 444013999 - 2³ = 444013991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444013991) 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 15 ways as a sum of consecutive naturals, for example, 17877 + ... + 34750.

It is an arithmetic number, because the mean of its divisors is an integer number (33155640).

Almost surely, 2^444013999 is an apocalyptic number.

444013999 is a deficient number, since it is larger than the sum of its proper divisors (86476241).

444013999 is a wasteful number, since it uses less digits than its factorization.

444013999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52710.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 444013999 is about 21071.6396846567. The cubic root of 444013999 is about 762.8963802745.

It can be divided in two parts, 44401 and 3999, that added together give a square (48400 = 220²).

The spelling of 444013999 in words is "four hundred forty-four million, thirteen thousand, nine hundred ninety-nine".