8990171 has 4 divisors (see below), whose sum is σ = 9381072. Its totient is φ = 8599272.

The previous prime is 8990153. The next prime is 8990183. The reversal of 8990171 is 1710998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1710998 = 2 ⋅855499.

It is a cyclic number.

It is not a de Polignac number, because 8990171 - 2²² = 4795867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8990101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195416 + ... + 195461.

It is an arithmetic number, because the mean of its divisors is an integer number (2345268).

Almost surely, 2^8990171 is an apocalyptic number.

8990171 is a deficient number, since it is larger than the sum of its proper divisors (390901).

8990171 is a wasteful number, since it uses less digits than its factorization.

8990171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390900.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 8990171 is about 2998.3613858239. The cubic root of 8990171 is about 207.9326319674.

The spelling of 8990171 in words is "eight million, nine hundred ninety thousand, one hundred seventy-one".