4420405 has 16 divisors (see below), whose sum is σ = 5832000. Its totient is φ = 3189760.

The previous prime is 4420379. The next prime is 4420417. The reversal of 4420405 is 5040244.

It is not a de Polignac number, because 4420405 - 2⁵ = 4420373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9621 + ... + 10069.

It is an arithmetic number, because the mean of its divisors is an integer number (364500).

Almost surely, 2^4420405 is an apocalyptic number.

It is an amenable number.

4420405 is a deficient number, since it is larger than the sum of its proper divisors (1411595).

4420405 is a wasteful number, since it uses less digits than its factorization.

4420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4420405 is about 2102.4759213841. The cubic root of 4420405 is about 164.1171703819.

Adding to 4420405 its reverse (5040244), we get a palindrome (9460649).

It can be divided in two parts, 44 and 20405, that added together give a square (20449 = 143²).

The spelling of 4420405 in words is "four million, four hundred twenty thousand, four hundred five".