444181 has 2 divisors, whose sum is σ = 444182. Its totient is φ = 444180.

The previous prime is 444179. The next prime is 444187. The reversal of 444181 is 181444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443556 + 625 = 666^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 444181 - 2¹ = 444179 is a prime.

It is a super-2 number, since 2×444181² = 394593521522, which contains 22 as substring.

Together with 444179, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₃₇₂₈₂ and since 444181 and 37282 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222090 + 222091.

It is an arithmetic number, because the mean of its divisors is an integer number (222091).

2⁴⁴⁴¹⁸¹ is an apocalyptic number.

It is an amenable number.

444181 is a deficient number, since it is larger than the sum of its proper divisors (1).

444181 is an equidigital number, since it uses as much as digits as its factorization.

444181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 22.

The square root of 444181 is about 666.4690540453. The cubic root of 444181 is about 76.2992014263.

It can be divided in two parts, 444 and 181, that added together give a 4-th power (625 = 5⁴).

The spelling of 444181 in words is "four hundred forty-four thousand, one hundred eighty-one".