444404001 has 4 divisors (see below), whose sum is σ = 592538672. Its totient is φ = 296269332.

The previous prime is 444403997. The next prime is 444404017. The reversal of 444404001 is 100404444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 444404001 - 2² = 444403997 is a prime.

It is a super-2 number, since 2×444404001² = 394989832209616002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444404101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74067331 + ... + 74067336.

It is an arithmetic number, because the mean of its divisors is an integer number (148134668).

Almost surely, 2^444404001 is an apocalyptic number.

It is an amenable number.

444404001 is a deficient number, since it is larger than the sum of its proper divisors (148134671).

444404001 is a wasteful number, since it uses less digits than its factorization.

444404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148134670.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 444404001 is about 21080.8918454604. The cubic root of 444404001 is about 763.1196795733.

Adding to 444404001 its reverse (100404444), we get a palindrome (544808445).

The spelling of 444404001 in words is "four hundred forty-four million, four hundred four thousand, one".