440172 has 18 divisors (see below), whose sum is σ = 1112748. Its totient is φ = 146712.

The previous prime is 440171. The next prime is 440177. The reversal of 440172 is 271044.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (440171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6078 + ... + 6149.

2⁴⁴⁰¹⁷² is an apocalyptic number.

It is an amenable number.

440172 is an abundant number, since it is smaller than the sum of its proper divisors (672576).

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

440172 is a wasteful number, since it uses less digits than its factorization.

440172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237 (or 12232 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 440172 is about 663.4545952814. The cubic root of 440172 is about 76.0689586487.

The spelling of 440172 in words is "four hundred forty thousand, one hundred seventy-two", and thus it is an iban number.