8486991 has 16 divisors (see below), whose sum is σ = 12781920. Its totient is φ = 5564160.

The previous prime is 8486987. The next prime is 8486993. The reversal of 8486991 is 1996848.

It is not a de Polignac number, because 8486991 - 2² = 8486987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8486993) 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, 930 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (798870).

Almost surely, 2^8486991 is an apocalyptic number.

8486991 is a deficient number, since it is larger than the sum of its proper divisors (4294929).

8486991 is a wasteful number, since it uses less digits than its factorization.

8486991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223 (or 5217 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 8486991 is about 2913.2440680451. The cubic root of 8486991 is about 203.9785877180.

The spelling of 8486991 in words is "eight million, four hundred eighty-six thousand, nine hundred ninety-one".