4408405 has 4 divisors (see below), whose sum is σ = 5290092. Its totient is φ = 3526720.

The previous prime is 4408363. The next prime is 4408427. The reversal of 4408405 is 5048044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2268036 + 2140369 = 1506^2 + 1463^2 .

It is not a de Polignac number, because 4408405 - 2⁷ = 4408277 is a prime.

It is an Ulam number.

It is a Duffinian number.

4408405 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4408405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440836 + ... + 440845.

It is an arithmetic number, because the mean of its divisors is an integer number (1322523).

Almost surely, 2^4408405 is an apocalyptic number.

It is an amenable number.

4408405 is a deficient number, since it is larger than the sum of its proper divisors (881687).

4408405 is an equidigital number, since it uses as much as digits as its factorization.

4408405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881686.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 4408405 is about 2099.6202037511. The cubic root of 4408405 is about 163.9685270757.

The spelling of 4408405 in words is "four million, four hundred eight thousand, four hundred five".