4440181 has 4 divisors (see below), whose sum is σ = 4524012. Its totient is φ = 4356352.

The previous prime is 4440169. The next prime is 4440187. The reversal of 4440181 is 1810444.

4440181 = T₁₇₁₉ + T₁₇₂₀ + T₁₇₂₁.

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 3964081 + 476100 = 1991^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440181 - 2¹³ = 4431989 is a prime.

It is a super-2 number, since 2×4440181² = 39430414625522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440187) 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, 41836 + ... + 41941.

It is an arithmetic number, because the mean of its divisors is an integer number (1131003).

Almost surely, 2^4440181 is an apocalyptic number.

4440181 is the 1721-st centered triangular number.

It is an amenable number.

4440181 is a deficient number, since it is larger than the sum of its proper divisors (83831).

4440181 is an equidigital number, since it uses as much as digits as its factorization.

4440181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83830.

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

The square root of 4440181 is about 2107.1736995321. The cubic root of 4440181 is about 164.3615486783.

The spelling of 4440181 in words is "four million, four hundred forty thousand, one hundred eighty-one".