240389 has 8 divisors (see below), whose sum is σ = 253080. Its totient is φ = 228096.

The previous prime is 240379. The next prime is 240421. The reversal of 240389 is 983042.

240389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 52900 + 187489 = 230^2 + 433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240389 - 2¹² = 236293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2657 + ... + 2745.

It is an arithmetic number, because the mean of its divisors is an integer number (31635).

2²⁴⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

240389 is a deficient number, since it is larger than the sum of its proper divisors (12691).

240389 is an equidigital number, since it uses as much as digits as its factorization.

240389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 240389 is about 490.2948092730. The cubic root of 240389 is about 62.1782073688.

The spelling of 240389 in words is "two hundred forty thousand, three hundred eighty-nine".