4099405 has 16 divisors (see below), whose sum is σ = 5258880. Its totient is φ = 3060288.

The previous prime is 4099369. The next prime is 4099441. The reversal of 4099405 is 5049904.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4099369) and next prime (4099441).

It is a de Polignac number, because none of the positive numbers 2^k-4099405 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4531 + ... + 5359.

It is an arithmetic number, because the mean of its divisors is an integer number (328680).

Almost surely, 2^4099405 is an apocalyptic number.

It is an amenable number.

4099405 is a deficient number, since it is larger than the sum of its proper divisors (1159475).

4099405 is a wasteful number, since it uses less digits than its factorization.

4099405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 4099405 is about 2024.6987430233. The cubic root of 4099405 is about 160.0443236577.

The spelling of 4099405 in words is "four million, ninety-nine thousand, four hundred five".