23870039 has 2 divisors, whose sum is σ = 23870040. Its totient is φ = 23870038.

The previous prime is 23870017. The next prime is 23870071. The reversal of 23870039 is 93007832.

It is an a-pointer prime, because the next prime (23870071) can be obtained adding 23870039 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23870039 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23869987 and 23870014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23870339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11935019 + 11935020.

It is an arithmetic number, because the mean of its divisors is an integer number (11935020).

Almost surely, 2^23870039 is an apocalyptic number.

23870039 is a deficient number, since it is larger than the sum of its proper divisors (1).

23870039 is an equidigital number, since it uses as much as digits as its factorization.

23870039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 23870039 is about 4885.6973913659. The cubic root of 23870039 is about 287.9283153314.

The spelling of 23870039 in words is "twenty-three million, eight hundred seventy thousand, thirty-nine".