4090943 has 4 divisors (see below), whose sum is σ = 4232040. Its totient is φ = 3949848.

The previous prime is 4090937. The next prime is 4090967. The reversal of 4090943 is 3490904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4090943 - 2¹⁴ = 4074559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 141067 = 4090943 / (4 + 0 + 9 + 0 + 9 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70505 + ... + 70562.

It is an arithmetic number, because the mean of its divisors is an integer number (1058010).

Almost surely, 2^4090943 is an apocalyptic number.

4090943 is a deficient number, since it is larger than the sum of its proper divisors (141097).

4090943 is a wasteful number, since it uses less digits than its factorization.

4090943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141096.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4090943 is about 2022.6079699240. The cubic root of 4090943 is about 159.9341265288.

The spelling of 4090943 in words is "four million, ninety thousand, nine hundred forty-three".