8471491 has 16 divisors (see below), whose sum is σ = 10328256. Its totient is φ = 6782976.

The previous prime is 8471479. The next prime is 8471503. The reversal of 8471491 is 1941748.

It is an interprime number because it is at equal distance from previous prime (8471479) and next prime (8471503).

It is a cyclic number.

It is not a de Polignac number, because 8471491 - 2⁵ = 8471459 is a prime.

It is an Ulam number.

It is a Duffinian number.

8471491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8475491) 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, 30445 + ... + 30721.

It is an arithmetic number, because the mean of its divisors is an integer number (645516).

Almost surely, 2^8471491 is an apocalyptic number.

8471491 is a deficient number, since it is larger than the sum of its proper divisors (1856765).

8471491 is a wasteful number, since it uses less digits than its factorization.

8471491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 8064, while the sum is 34.

The square root of 8471491 is about 2910.5825877305. The cubic root of 8471491 is about 203.8543350114.

The spelling of 8471491 in words is "eight million, four hundred seventy-one thousand, four hundred ninety-one".