1240484289 has 8 divisors (see below), whose sum is σ = 1804340832. Its totient is φ = 751808640.

The previous prime is 1240484261. The next prime is 1240484299. The reversal of 1240484289 is 9824840421.

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

It is not a de Polignac number, because 1240484289 - 2⁵ = 1240484257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240484289.

It is not an unprimeable number, because it can be changed into a prime (1240484299) 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 7 ways as a sum of consecutive naturals, for example, 18795184 + ... + 18795249.

It is an arithmetic number, because the mean of its divisors is an integer number (225542604).

Almost surely, 2^1240484289 is an apocalyptic number.

It is an amenable number.

1240484289 is a deficient number, since it is larger than the sum of its proper divisors (563856543).

1240484289 is a wasteful number, since it uses less digits than its factorization.

1240484289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37590447.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 1240484289 is about 35220.5094937595. The cubic root of 1240484289 is about 1074.4769155875.

The spelling of 1240484289 in words is "one billion, two hundred forty million, four hundred eighty-four thousand, two hundred eighty-nine".