8291864 has 32 divisors (see below), whose sum is σ = 17867520. Its totient is φ = 3533856.

The previous prime is 8291839. The next prime is 8291879. The reversal of 8291864 is 4681928.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447 + ... + 15009.

It is an arithmetic number, because the mean of its divisors is an integer number (558360).

Almost surely, 2^8291864 is an apocalyptic number.

It is an amenable number.

8291864 is an abundant number, since it is smaller than the sum of its proper divisors (9575656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8291864 is a wasteful number, since it uses less digits than its factorization.

8291864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 8291864 is about 2879.5596885635. The cubic root of 8291864 is about 202.4032073106.

The spelling of 8291864 in words is "eight million, two hundred ninety-one thousand, eight hundred sixty-four".