4405500 has 144 divisors (see below), whose sum is σ = 15331680. Its totient is φ = 1056000.

The previous prime is 4405493. The next prime is 4405501. The reversal of 4405500 is 55044.

Added to its reverse (55044) it gives a square (4460544 = 2112²).

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49456 + ... + 49544.

It is an arithmetic number, because the mean of its divisors is an integer number (106470).

Almost surely, 2^4405500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4405500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7665840).

4405500 is an abundant number, since it is smaller than the sum of its proper divisors (10926180).

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

4405500 is a wasteful number, since it uses less digits than its factorization.

4405500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4405500 is about 2098.9282979654. The cubic root of 4405500 is about 163.9325024638.

Adding to 4405500 its reverse (55044), we get a square (4460544 = 2112²).

It can be divided in two parts, 4 and 405500, that added together give a palindrome (405504).

The spelling of 4405500 in words is "four million, four hundred five thousand, five hundred".