8491895 has 4 divisors (see below), whose sum is σ = 10190280. Its totient is φ = 6793512.

The previous prime is 8491831. The next prime is 8491897. The reversal of 8491895 is 5981948.

8491895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8491895 - 2⁶ = 8491831 is a prime.

It is a super-2 number, since 2×8491895² = 144224561382050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8491897) 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, 849185 + ... + 849194.

It is an arithmetic number, because the mean of its divisors is an integer number (2547570).

Almost surely, 2^8491895 is an apocalyptic number.

8491895 is a deficient number, since it is larger than the sum of its proper divisors (1698385).

8491895 is a wasteful number, since it uses less digits than its factorization.

8491895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698384.

The product of its digits is 103680, while the sum is 44.

The square root of 8491895 is about 2914.0856198815. The cubic root of 8491895 is about 204.0178681645.

It can be divided in two parts, 849 and 1895, that added together give a cube (2744 = 14³).

The spelling of 8491895 in words is "eight million, four hundred ninety-one thousand, eight hundred ninety-five".