8208491 has 4 divisors (see below), whose sum is σ = 8216400. Its totient is φ = 8200584.

The previous prime is 8208449. The next prime is 8208553. The reversal of 8208491 is 1948028.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8208491 - 2⁶ = 8208427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8208091) 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, 2111 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (2054100).

Almost surely, 2^8208491 is an apocalyptic number.

8208491 is a deficient number, since it is larger than the sum of its proper divisors (7909).

8208491 is a wasteful number, since it uses less digits than its factorization.

8208491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8208491 is about 2865.0464219625. The cubic root of 8208491 is about 201.7225465741.

The spelling of 8208491 in words is "eight million, two hundred eight thousand, four hundred ninety-one".