444161 has 4 divisors (see below), whose sum is σ = 445524. Its totient is φ = 442800.

The previous prime is 444151. The next prime is 444167. The reversal of 444161 is 161444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 295936 = 385^2 + 544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444161 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 (444167) 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, 131 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (111381).

2⁴⁴⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

444161 is a deficient number, since it is larger than the sum of its proper divisors (1363).

444161 is an equidigital number, since it uses as much as digits as its factorization.

444161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its digits is 384, while the sum is 20.

The square root of 444161 is about 666.4540494288. The cubic root of 444161 is about 76.2980562423.

The spelling of 444161 in words is "four hundred forty-four thousand, one hundred sixty-one".