4400172 has 72 divisors (see below), whose sum is σ = 13395200. Its totient is φ = 1189728.

The previous prime is 4400167. The next prime is 4400183. The reversal of 4400172 is 2710044.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4329 + ... + 5247.

Almost surely, 2^4400172 is an apocalyptic number.

4400172 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4400172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6697600).

4400172 is an abundant number, since it is smaller than the sum of its proper divisors (8995028).

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

4400172 is a wasteful number, since it uses less digits than its factorization.

4400172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 950 counting only the distinct ones).

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

The square root of 4400172 is about 2097.6586948310. The cubic root of 4400172 is about 163.8663892932.

The spelling of 4400172 in words is "four million, four hundred thousand, one hundred seventy-two".