8931161 has 4 divisors (see below), whose sum is σ = 9057024. Its totient is φ = 8805300.

The previous prime is 8931149. The next prime is 8931163. The reversal of 8931161 is 1611398.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8931161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8931163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62825 + ... + 62966.

It is an arithmetic number, because the mean of its divisors is an integer number (2264256).

Almost surely, 2^8931161 is an apocalyptic number.

8931161 is the 1337-th centered decagonal number.

It is an amenable number.

8931161 is a deficient number, since it is larger than the sum of its proper divisors (125863).

8931161 is a wasteful number, since it uses less digits than its factorization.

8931161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125862.

The product of its digits is 1296, while the sum is 29.

The square root of 8931161 is about 2988.5048101015. The cubic root of 8931161 is about 207.4766877570.

The spelling of 8931161 in words is "eight million, nine hundred thirty-one thousand, one hundred sixty-one".