4099805 has 16 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 3055872.

The previous prime is 4099789. The next prime is 4099807. The reversal of 4099805 is 5089904.

It is a cyclic number.

It is not a de Polignac number, because 4099805 - 2⁴ = 4099789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4099807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11642 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

Almost surely, 2^4099805 is an apocalyptic number.

It is an amenable number.

4099805 is a deficient number, since it is larger than the sum of its proper divisors (1161955).

4099805 is a wasteful number, since it uses less digits than its factorization.

4099805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 4099805 is about 2024.7975207413. The cubic root of 4099805 is about 160.0495289373.

Subtracting 4099805 from its reverse (5089904), we obtain a palindrome (990099).

The spelling of 4099805 in words is "four million, ninety-nine thousand, eight hundred five".