8971317961 has 16 divisors (see below), whose sum is σ = 9354953088. Its totient is φ = 8595417600.

The previous prime is 8971317947. The next prime is 8971317967. The reversal of 8971317961 is 1697131798.

It is a cyclic number.

It is not a de Polignac number, because 8971317961 - 2⁹ = 8971317449 is a prime.

It is a super-2 number, since 2×8971317961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8971317899 and 8971317908.

It is not an unprimeable number, because it can be changed into a prime (8971317967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2948601 + ... + 2951641.

It is an arithmetic number, because the mean of its divisors is an integer number (584684568).

Almost surely, 2^8971317961 is an apocalyptic number.

It is an amenable number.

8971317961 is a deficient number, since it is larger than the sum of its proper divisors (383635127).

8971317961 is a wasteful number, since it uses less digits than its factorization.

8971317961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 571536, while the sum is 52.

The square root of 8971317961 is about 94717.0415553611. The cubic root of 8971317961 is about 2077.8718032157.

The spelling of 8971317961 in words is "eight billion, nine hundred seventy-one million, three hundred seventeen thousand, nine hundred sixty-one".