23740039 has 2 divisors, whose sum is σ = 23740040. Its totient is φ = 23740038.

The previous prime is 23740033. The next prime is 23740049. The reversal of 23740039 is 93004732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23740039 - 2¹⁷ = 23608967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23739989 and 23740016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23740033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11870019 + 11870020.

It is an arithmetic number, because the mean of its divisors is an integer number (11870020).

Almost surely, 2^23740039 is an apocalyptic number.

23740039 is a deficient number, since it is larger than the sum of its proper divisors (1).

23740039 is an equidigital number, since it uses as much as digits as its factorization.

23740039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 23740039 is about 4872.3750881885. The cubic root of 23740039 is about 287.4046625287.

The spelling of 23740039 in words is "twenty-three million, seven hundred forty thousand, thirty-nine".