2023439 has 4 divisors (see below), whose sum is σ = 2207400. Its totient is φ = 1839480.

The previous prime is 2023433. The next prime is 2023447. The reversal of 2023439 is 9343202.

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 2023439 - 2⁸ = 2023183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91964 + ... + 91985.

It is an arithmetic number, because the mean of its divisors is an integer number (551850).

2^2023439 is an apocalyptic number.

2023439 is a deficient number, since it is larger than the sum of its proper divisors (183961).

2023439 is a wasteful number, since it uses less digits than its factorization.

2023439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183960.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 2023439 is about 1422.4763618423. The cubic root of 2023439 is about 126.4823828362.

The spelling of 2023439 in words is "two million, twenty-three thousand, four hundred thirty-nine".