444352081 has 4 divisors (see below), whose sum is σ = 444465252. Its totient is φ = 444238912.

The previous prime is 444352063. The next prime is 444352091. The reversal of 444352081 is 180253444.

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 112784400 + 331567681 = 10620^2 + 18209^2 .

It is a cyclic number.

It is not a de Polignac number, because 444352081 - 2⁵ = 444352049 is a prime.

It is a super-2 number, since 2×444352081² = 394897543778061122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444352021) 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, 50476 + ... + 58621.

It is an arithmetic number, because the mean of its divisors is an integer number (111116313).

Almost surely, 2^444352081 is an apocalyptic number.

It is an amenable number.

444352081 is a deficient number, since it is larger than the sum of its proper divisors (113171).

444352081 is a wasteful number, since it uses less digits than its factorization.

444352081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113170.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 444352081 is about 21079.6603625391. The cubic root of 444352081 is about 763.0899598312.

The spelling of 444352081 in words is "four hundred forty-four million, three hundred fifty-two thousand, eighty-one".