4099605 has 16 divisors (see below), whose sum is σ = 6586944. Its totient is φ = 2177280.

The previous prime is 4099597. The next prime is 4099621. The reversal of 4099605 is 5069904.

It is a happy number.

It is not a de Polignac number, because 4099605 - 2³ = 4099597 is a prime.

It is a super-2 number, since 2×4099605² = 33613522312050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4650 + ... + 5460.

It is an arithmetic number, because the mean of its divisors is an integer number (411684).

Almost surely, 2^4099605 is an apocalyptic number.

It is an amenable number.

4099605 is a deficient number, since it is larger than the sum of its proper divisors (2487339).

4099605 is a wasteful number, since it uses less digits than its factorization.

4099605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 4099605 is about 2024.7481324846. The cubic root of 4099605 is about 160.0469263398.

Subtracting 4099605 from its reverse (5069904), we obtain a cube (970299 = 99³).

It can be divided in two parts, 409960 and 5, that added together give a triangular number (409965 = T₉₀₅).

The spelling of 4099605 in words is "four million, ninety-nine thousand, six hundred five".