8240559749 has 8 divisors (see below), whose sum is σ = 8677163040. Its totient is φ = 7804245456.

The previous prime is 8240559713. The next prime is 8240559791. The reversal of 8240559749 is 9479550428.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8240559749 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 8240559749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240559709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12434 + ... + 128979.

It is an arithmetic number, because the mean of its divisors is an integer number (1084645380).

Almost surely, 2^8240559749 is an apocalyptic number.

It is an amenable number.

8240559749 is a deficient number, since it is larger than the sum of its proper divisors (436603291).

8240559749 is a wasteful number, since it uses less digits than its factorization.

8240559749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144499.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The square root of 8240559749 is about 90777.5288769198. The cubic root of 8240559749 is about 2019.8490026169.

The spelling of 8240559749 in words is "eight billion, two hundred forty million, five hundred fifty-nine thousand, seven hundred forty-nine".