240388439 has 2 divisors, whose sum is σ = 240388440. Its totient is φ = 240388438.

The previous prime is 240388427. The next prime is 240388451. The reversal of 240388439 is 934883042.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (240388427) and next prime (240388451).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240388439 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240388396 and 240388405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240388459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120194219 + 120194220.

It is an arithmetic number, because the mean of its divisors is an integer number (120194220).

Almost surely, 2^240388439 is an apocalyptic number.

240388439 is a deficient number, since it is larger than the sum of its proper divisors (1).

240388439 is an equidigital number, since it uses as much as digits as its factorization.

240388439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 240388439 is about 15504.4651310518. The cubic root of 240388439 is about 621.7815900001.

The spelling of 240388439 in words is "two hundred forty million, three hundred eighty-eight thousand, four hundred thirty-nine".