8993440259 has 4 divisors (see below), whose sum is σ = 9466779240. Its totient is φ = 8520101280.

The previous prime is 8993440207. The next prime is 8993440301. The reversal of 8993440259 is 9520443998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8993440259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8993440259.

It is not an unprimeable number, because it can be changed into a prime (8993445259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236669462 + ... + 236669499.

It is an arithmetic number, because the mean of its divisors is an integer number (2366694810).

Almost surely, 2^8993440259 is an apocalyptic number.

8993440259 is a deficient number, since it is larger than the sum of its proper divisors (473338981).

8993440259 is a wasteful number, since it uses less digits than its factorization.

8993440259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473338980.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 8993440259 is about 94833.7506323566. The cubic root of 8993440259 is about 2079.5783368470.

The spelling of 8993440259 in words is "eight billion, nine hundred ninety-three million, four hundred forty thousand, two hundred fifty-nine".