4099399 has 4 divisors (see below), whose sum is σ = 4104160. Its totient is φ = 4094640.

The previous prime is 4099369. The next prime is 4099441. The reversal of 4099399 is 9939904.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4099399 - 2⁵ = 4099367 is a prime.

It is a super-2 number, since 2×4099399² = 33610144322402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4099309) by changing a digit.

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, 687 + ... + 2944.

It is an arithmetic number, because the mean of its divisors is an integer number (1026040).

Almost surely, 2^4099399 is an apocalyptic number.

4099399 is a deficient number, since it is larger than the sum of its proper divisors (4761).

4099399 is a wasteful number, since it uses less digits than its factorization.

4099399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 4099399 is about 2024.6972613208. The cubic root of 4099399 is about 160.0442455759.

The spelling of 4099399 in words is "four million, ninety-nine thousand, three hundred ninety-nine".