444081901 has 4 divisors (see below), whose sum is σ = 459395100. Its totient is φ = 428768704.

The previous prime is 444081899. The next prime is 444081917. The reversal of 444081901 is 109180444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379665225 + 64416676 = 19485^2 + 8026^2 .

It is a cyclic number.

It is not a de Polignac number, because 444081901 - 2¹ = 444081899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444031901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7656556 + ... + 7656613.

It is an arithmetic number, because the mean of its divisors is an integer number (114848775).

Almost surely, 2^444081901 is an apocalyptic number.

It is an amenable number.

444081901 is a deficient number, since it is larger than the sum of its proper divisors (15313199).

444081901 is a wasteful number, since it uses less digits than its factorization.

444081901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313198.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 444081901 is about 21073.2508408171. The cubic root of 444081901 is about 762.9352675991.

The spelling of 444081901 in words is "four hundred forty-four million, eighty-one thousand, nine hundred one".