2440243687 has 6 divisors (see below), whose sum is σ = 2788999304. Its totient is φ = 2091525420.

The previous prime is 2440243681. The next prime is 2440243691. The reversal of 2440243687 is 7863420442.

It is a de Polignac number, because none of the positive numbers 2^k-2440243687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440243681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121362 + ... + 140032.

Almost surely, 2^2440243687 is an apocalyptic number.

2440243687 is a deficient number, since it is larger than the sum of its proper divisors (348755617).

2440243687 is an frugal number, since it uses more digits than its factorization.

2440243687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37349 (or 18678 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 2440243687 is about 49398.8227288870. The cubic root of 2440243687 is about 1346.3079158322.

Multiplying 2440243687 by its product of nonzero digits (258048), we get a square (629700002942976 = 25093824²).

The spelling of 2440243687 in words is "two billion, four hundred forty million, two hundred forty-three thousand, six hundred eighty-seven".