240289069 has 4 divisors (see below), whose sum is σ = 246149820. Its totient is φ = 234428320.

The previous prime is 240289057. The next prime is 240289097. The reversal of 240289069 is 960982042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4052169 + 236236900 = 2013^2 + 15370^2 .

It is a cyclic number.

It is not a de Polignac number, because 240289069 - 2⁷ = 240288941 is a prime.

It is a super-2 number, since 2×240289069² = 115477673361773522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240289039) 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 in 3 ways as a sum of consecutive naturals, for example, 2930314 + ... + 2930395.

It is an arithmetic number, because the mean of its divisors is an integer number (61537455).

Almost surely, 2^240289069 is an apocalyptic number.

It is an amenable number.

240289069 is a deficient number, since it is larger than the sum of its proper divisors (5860751).

240289069 is an equidigital number, since it uses as much as digits as its factorization.

240289069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860750.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 240289069 is about 15501.2602390902. The cubic root of 240289069 is about 621.6959023627.

The spelling of 240289069 in words is "two hundred forty million, two hundred eighty-nine thousand, sixty-nine".