444582161 has 4 divisors (see below), whose sum is σ = 444648000. Its totient is φ = 444516324.

The previous prime is 444582143. The next prime is 444582163. The reversal of 444582161 is 161285444.

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 a cyclic number.

It is not a de Polignac number, because 444582161 - 2¹⁸ = 444320017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (444582163) 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, 21461 + ... + 36738.

It is an arithmetic number, because the mean of its divisors is an integer number (111162000).

Almost surely, 2^444582161 is an apocalyptic number.

It is an amenable number.

444582161 is a deficient number, since it is larger than the sum of its proper divisors (65839).

444582161 is an equidigital number, since it uses as much as digits as its factorization.

444582161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65838.

The product of its digits is 30720, while the sum is 35.

The square root of 444582161 is about 21085.1170497107. The cubic root of 444582161 is about 763.2216432801.

The spelling of 444582161 in words is "four hundred forty-four million, five hundred eighty-two thousand, one hundred sixty-one".