240302389 has 2 divisors, whose sum is σ = 240302390. Its totient is φ = 240302388.

The previous prime is 240302351. The next prime is 240302407. The reversal of 240302389 is 983203042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155201764 + 85100625 = 12458^2 + 9225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240302389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240302389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240302989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120151194 + 120151195.

It is an arithmetic number, because the mean of its divisors is an integer number (120151195).

Almost surely, 2^240302389 is an apocalyptic number.

It is an amenable number.

240302389 is a deficient number, since it is larger than the sum of its proper divisors (1).

240302389 is an equidigital number, since it uses as much as digits as its factorization.

240302389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 240302389 is about 15501.6898756232. The cubic root of 240302389 is about 621.7073896884.

The spelling of 240302389 in words is "two hundred forty million, three hundred two thousand, three hundred eighty-nine".