4405820 has 12 divisors (see below), whose sum is σ = 9252264. Its totient is φ = 1762320.

The previous prime is 4405789. The next prime is 4405829. The reversal of 4405820 is 285044.

It is a super-2 number, since 2×4405820² = 38822499744800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110126 + ... + 110165.

It is an arithmetic number, because the mean of its divisors is an integer number (771022).

Almost surely, 2^4405820 is an apocalyptic number.

It is an amenable number.

4405820 is an abundant number, since it is smaller than the sum of its proper divisors (4846444).

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

4405820 is a wasteful number, since it uses less digits than its factorization.

4405820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220300 (or 220298 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4405820 is about 2099.0045259599. The cubic root of 4405820 is about 163.9364715275.

It can be divided in two parts, 4405 and 820, that added together give a palindrome (5225).

The spelling of 4405820 in words is "four million, four hundred five thousand, eight hundred twenty".