4089243 has 4 divisors (see below), whose sum is σ = 5452328. Its totient is φ = 2726160.

The previous prime is 4089227. The next prime is 4089259. The reversal of 4089243 is 3429804.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (4089227) and next prime (4089259).

It is not a de Polignac number, because 4089243 - 2⁴ = 4089227 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4089243.

It is not an unprimeable number, because it can be changed into a prime (4089263) 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, 681538 + ... + 681543.

It is an arithmetic number, because the mean of its divisors is an integer number (1363082).

Almost surely, 2^4089243 is an apocalyptic number.

4089243 is a deficient number, since it is larger than the sum of its proper divisors (1363085).

4089243 is a wasteful number, since it uses less digits than its factorization.

4089243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363084.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 4089243 is about 2022.1876767501. The cubic root of 4089243 is about 159.9119698048.

The spelling of 4089243 in words is "four million, eighty-nine thousand, two hundred forty-three".