240009689 has 8 divisors (see below), whose sum is σ = 257191200. Its totient is φ = 223168576.

The previous prime is 240009643. The next prime is 240009701. The reversal of 240009689 is 986900042.

240009689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 240009689 - 2¹⁶ = 239944153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240009989) 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, 83639 + ... + 86460.

It is an arithmetic number, because the mean of its divisors is an integer number (32148900).

Almost surely, 2^240009689 is an apocalyptic number.

It is an amenable number.

240009689 is a deficient number, since it is larger than the sum of its proper divisors (17181511).

240009689 is a wasteful number, since it uses less digits than its factorization.

240009689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170199.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 240009689 is about 15492.2460928040. The cubic root of 240009689 is about 621.4548638493.

The spelling of 240009689 in words is "two hundred forty million, nine thousand, six hundred eighty-nine".