4099685 has 4 divisors (see below), whose sum is σ = 4919628. Its totient is φ = 3279744.

The previous prime is 4099679. The next prime is 4099699. The reversal of 4099685 is 5869904.

4099685 = 1168² + 1169² + 1170².

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 2122849 + 1976836 = 1457^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 4099685 - 2⁶ = 4099621 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 409964 + ... + 409973.

It is an arithmetic number, because the mean of its divisors is an integer number (1229907).

Almost surely, 2^4099685 is an apocalyptic number.

It is an amenable number.

4099685 is a deficient number, since it is larger than the sum of its proper divisors (819943).

4099685 is an equidigital number, since it uses as much as digits as its factorization.

4099685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819942.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 4099685 is about 2024.7678879318. The cubic root of 4099685 is about 160.0479673890.

The spelling of 4099685 in words is "four million, ninety-nine thousand, six hundred eighty-five".