8971521093 has 8 divisors (see below), whose sum is σ = 13291142400. Its totient is φ = 5981014044.

The previous prime is 8971521047. The next prime is 8971521101. The reversal of 8971521093 is 3901251798.

It is not a de Polignac number, because 8971521093 - 2⁸ = 8971520837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8971525093) 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, 166139253 + ... + 166139306.

It is an arithmetic number, because the mean of its divisors is an integer number (1661392800).

Almost surely, 2^8971521093 is an apocalyptic number.

It is an amenable number.

8971521093 is a deficient number, since it is larger than the sum of its proper divisors (4319621307).

8971521093 is a wasteful number, since it uses less digits than its factorization.

8971521093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332278568 (or 332278562 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 8971521093 is about 94718.1138589658. The cubic root of 8971521093 is about 2077.8874857524.

The spelling of 8971521093 in words is "eight billion, nine hundred seventy-one million, five hundred twenty-one thousand, ninety-three".