8609491 has 16 divisors (see below), whose sum is σ = 9836640. Its totient is φ = 7463680.

The previous prime is 8609483. The next prime is 8609501. The reversal of 8609491 is 1949068.

It is a cyclic number.

It is not a de Polignac number, because 8609491 - 2³ = 8609483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8609491.

It is not an unprimeable number, because it can be changed into a prime (8609411) 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 15 ways as a sum of consecutive naturals, for example, 43605 + ... + 43801.

It is an arithmetic number, because the mean of its divisors is an integer number (614790).

Almost surely, 2^8609491 is an apocalyptic number.

8609491 is a deficient number, since it is larger than the sum of its proper divisors (1227149).

8609491 is a wasteful number, since it uses less digits than its factorization.

8609491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 8609491 is about 2934.1934155744. The cubic root of 8609491 is about 204.9553025691.

The spelling of 8609491 in words is "eight million, six hundred nine thousand, four hundred ninety-one".