4400400 has 120 divisors (see below), whose sum is σ = 14914720. Its totient is φ = 1105920.

The previous prime is 4400393. The next prime is 4400401. The reversal of 4400400 is 40044.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (4400401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22704 + ... + 22896.

Almost surely, 2^4400400 is an apocalyptic number.

4400400 is a gapful number since it is divisible by the number (40) 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 4400400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7457360).

4400400 is an abundant number, since it is smaller than the sum of its proper divisors (10514320).

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

4400400 is a wasteful number, since it uses less digits than its factorization.

4400400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4400400 is about 2097.7130404324. The cubic root of 4400400 is about 163.8692195531.

Adding to 4400400 its reverse (40044), we get a palindrome (4440444).

The spelling of 4400400 in words is "four million, four hundred thousand, four hundred".