444001331 has 8 divisors (see below), whose sum is σ = 450988560. Its totient is φ = 437058688.

The previous prime is 444001321. The next prime is 444001333. The reversal of 444001331 is 133100444.

It is a happy number.

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 444001331 - 2⁶ = 444001267 is a prime.

It is a super-2 number, since 2×444001331² = 394274363859543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444001333) 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 7 ways as a sum of consecutive naturals, for example, 9215 + ... + 31191.

It is an arithmetic number, because the mean of its divisors is an integer number (56373570).

Almost surely, 2^444001331 is an apocalyptic number.

444001331 is a deficient number, since it is larger than the sum of its proper divisors (6987229).

444001331 is a wasteful number, since it uses less digits than its factorization.

444001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22293.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 444001331 is about 21071.3390889141. The cubic root of 444001331 is about 762.8891249002.

Adding to 444001331 its reverse (133100444), we get a palindrome (577101775).

The spelling of 444001331 in words is "four hundred forty-four million, one thousand, three hundred thirty-one".