8489691 has 72 divisors (see below), whose sum is σ = 15934464. Its totient is φ = 4490640.

The previous prime is 8489659. The next prime is 8489729. The reversal of 8489691 is 1969848.

It is not a de Polignac number, because 8489691 - 2⁵ = 8489659 is a prime.

Its product of digits (124416) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8489641) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 273846 + ... + 273876.

It is an arithmetic number, because the mean of its divisors is an integer number (221312).

Almost surely, 2^8489691 is an apocalyptic number.

8489691 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8489691 is a deficient number, since it is larger than the sum of its proper divisors (7444773).

8489691 is a wasteful number, since it uses less digits than its factorization.

8489691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 64 counting only the distinct ones).

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

The square root of 8489691 is about 2913.7074321215. The cubic root of 8489691 is about 204.0002162627. Note that the first 3 decimals are identical.

It can be divided in two parts, 8489 and 691, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 8489691 in words is "eight million, four hundred eighty-nine thousand, six hundred ninety-one".