8949487591 has 32 divisors (see below), whose sum is σ = 10209438720. Its totient is φ = 7772889600.

The previous prime is 8949487583. The next prime is 8949487607. The reversal of 8949487591 is 1957849498.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8949487591 - 2³ = 8949487583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8949487291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9737830 + ... + 9738748.

It is an arithmetic number, because the mean of its divisors is an integer number (319044960).

Almost surely, 2^8949487591 is an apocalyptic number.

8949487591 is a deficient number, since it is larger than the sum of its proper divisors (1259951129).

8949487591 is a wasteful number, since it uses less digits than its factorization.

8949487591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375.

The product of its digits is 26127360, while the sum is 64.

The square root of 8949487591 is about 94601.7314376434. The cubic root of 8949487591 is about 2076.1850368214.

The spelling of 8949487591 in words is "eight billion, nine hundred forty-nine million, four hundred eighty-seven thousand, five hundred ninety-one".