8491473 has 20 divisors (see below), whose sum is σ = 12855040. Its totient is φ = 5585112.

The previous prime is 8491471. The next prime is 8491487. The reversal of 8491473 is 3741948.

It is a happy number.

It is not a de Polignac number, because 8491473 - 2¹ = 8491471 is a prime.

It is a super-2 number, since 2×8491473² = 144210227419458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8491471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5736 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (642752).

Almost surely, 2^8491473 is an apocalyptic number.

It is an amenable number.

8491473 is a deficient number, since it is larger than the sum of its proper divisors (4363567).

8491473 is a wasteful number, since it uses less digits than its factorization.

8491473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1409 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8491473 is about 2914.0132120497. The cubic root of 8491473 is about 204.0144885903.

The spelling of 8491473 in words is "eight million, four hundred ninety-one thousand, four hundred seventy-three".