8491747359 has 8 divisors (see below), whose sum is σ = 11339461552. Its totient is φ = 5652599040.

The previous prime is 8491747307. The next prime is 8491747373. The reversal of 8491747359 is 9537471948.

It is a happy number.

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

It is not a de Polignac number, because 8491747359 - 2⁹ = 8491746847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8491747299 and 8491747308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8491747379) 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, 2139154 + ... + 2143119.

It is an arithmetic number, because the mean of its divisors is an integer number (1417432694).

Almost surely, 2^8491747359 is an apocalyptic number.

8491747359 is a deficient number, since it is larger than the sum of its proper divisors (2847714193).

8491747359 is a wasteful number, since it uses less digits than its factorization.

8491747359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282937.

The product of its digits is 7620480, while the sum is 57.

The square root of 8491747359 is about 92150.6774744494. The cubic root of 8491747359 is about 2040.1668579877.

The spelling of 8491747359 in words is "eight billion, four hundred ninety-one million, seven hundred forty-seven thousand, three hundred fifty-nine".