4099943 has 2 divisors, whose sum is σ = 4099944. Its totient is φ = 4099942.

The previous prime is 4099903. The next prime is 4099961. The reversal of 4099943 is 3499904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4099943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4099897 and 4099906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4099903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049971 + 2049972.

It is an arithmetic number, because the mean of its divisors is an integer number (2049972).

Almost surely, 2^4099943 is an apocalyptic number.

4099943 is a deficient number, since it is larger than the sum of its proper divisors (1).

4099943 is an equidigital number, since it uses as much as digits as its factorization.

4099943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 4099943 is about 2024.8315979360. The cubic root of 4099943 is about 160.0513246802.

The spelling of 4099943 in words is "four million, ninety-nine thousand, nine hundred forty-three".