440169 has 8 divisors (see below), whose sum is σ = 605952. Its totient is φ = 283920.

The previous prime is 440159. The next prime is 440171. The reversal of 440169 is 961044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440169 - 2¹⁵ = 407401 is a prime.

It is a super-2 number, since 2×440169² = 387497497122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

440169 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (440159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (75744).

2⁴⁴⁰¹⁶⁹ is an apocalyptic number.

It is an amenable number.

440169 is a deficient number, since it is larger than the sum of its proper divisors (165783).

440169 is a wasteful number, since it uses less digits than its factorization.

440169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 440169 is about 663.4523343843. The cubic root of 440169 is about 76.0687858319.

The spelling of 440169 in words is "four hundred forty thousand, one hundred sixty-nine".