23442839 has 4 divisors (see below), whose sum is σ = 26791824. Its totient is φ = 20093856.

The previous prime is 23442833. The next prime is 23442841. The reversal of 23442839 is 93824432.

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 23442839 - 2⁸ = 23442583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23442799 and 23442808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23442833) 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, 1674482 + ... + 1674495.

It is an arithmetic number, because the mean of its divisors is an integer number (6697956).

Almost surely, 2^23442839 is an apocalyptic number.

23442839 is a deficient number, since it is larger than the sum of its proper divisors (3348985).

23442839 is an equidigital number, since it uses as much as digits as its factorization.

23442839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348984.

The product of its digits is 41472, while the sum is 35.

The square root of 23442839 is about 4841.7805609094. The cubic root of 23442839 is about 286.2002892262.

The spelling of 23442839 in words is "twenty-three million, four hundred forty-two thousand, eight hundred thirty-nine".