240789 has 4 divisors (see below), whose sum is σ = 321056. Its totient is φ = 160524.

The previous prime is 240769. The next prime is 240797. The reversal of 240789 is 987042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 240789 - 2¹³ = 232597 is a prime.

It is a D-number.

It is a Duffinian number.

240789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40129 + ... + 40134.

It is an arithmetic number, because the mean of its divisors is an integer number (80264).

2²⁴⁰⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

240789 is a deficient number, since it is larger than the sum of its proper divisors (80267).

240789 is an equidigital number, since it uses as much as digits as its factorization.

240789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80266.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 240789 is about 490.7025575642. The cubic root of 240789 is about 62.2126758077.

The spelling of 240789 in words is "two hundred forty thousand, seven hundred eighty-nine".