23842939 has 2 divisors, whose sum is σ = 23842940. Its totient is φ = 23842938.

The previous prime is 23842933. The next prime is 23842943. The reversal of 23842939 is 93924832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23842939 - 2⁷ = 23842811 is a prime.

It is not a weakly prime, because it can be changed into another prime (23842933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11921469 + 11921470.

It is an arithmetic number, because the mean of its divisors is an integer number (11921470).

Almost surely, 2^23842939 is an apocalyptic number.

23842939 is a deficient number, since it is larger than the sum of its proper divisors (1).

23842939 is an equidigital number, since it uses as much as digits as its factorization.

23842939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 23842939 is about 4882.9232023451. The cubic root of 23842939 is about 287.8193110114.

The spelling of 23842939 in words is "twenty-three million, eight hundred forty-two thousand, nine hundred thirty-nine".