440166 has 8 divisors (see below), whose sum is σ = 880344. Its totient is φ = 146720.

The previous prime is 440159. The next prime is 440171. The reversal of 440166 is 661044.

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

440166 is an admirable number.

It is a super-2 number, since 2×440166² = 387492215112, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440166.

It is an unprimeable number.

440166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36675 + ... + 36686.

It is an arithmetic number, because the mean of its divisors is an integer number (110043).

2⁴⁴⁰¹⁶⁶ is an apocalyptic number.

440166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440166 is a wasteful number, since it uses less digits than its factorization.

440166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73366.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 440166 is about 663.4500734795. The cubic root of 440166 is about 76.0686130143.

It can be divided in two parts, 440 and 166, that added together give a palindrome (606).

The spelling of 440166 in words is "four hundred forty thousand, one hundred sixty-six".