240869 has 2 divisors, whose sum is σ = 240870. Its totient is φ = 240868.

The previous prime is 240859. The next prime is 240881. The reversal of 240869 is 968042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172225 + 68644 = 415^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 240869 - 2⁴ = 240853 is a prime.

It is a super-2 number, since 2×240869² = 116035750322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120434 + 120435.

It is an arithmetic number, because the mean of its divisors is an integer number (120435).

2²⁴⁰⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

240869 is a deficient number, since it is larger than the sum of its proper divisors (1).

240869 is an equidigital number, since it uses as much as digits as its factorization.

240869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 240869 is about 490.7840665710. The cubic root of 240869 is about 62.2195649139.

The spelling of 240869 in words is "two hundred forty thousand, eight hundred sixty-nine".