8397471285 has 84 divisors (see below), whose sum is σ = 17575610508. Its totient is φ = 3838762368.

The previous prime is 8397471263. The next prime is 8397471323. The reversal of 8397471285 is 5821747938.

It is a happy number.

8397471285 is a `hidden beast` number, since 8 + 3 + 97 + 471 + 2 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6092895249 + 2304576036 = 78057^2 + 48006^2 .

It is not a de Polignac number, because 8397471285 - 2¹¹ = 8397469237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 155097 + ... + 202113.

Almost surely, 2^8397471285 is an apocalyptic number.

It is an amenable number.

8397471285 is an abundant number, since it is smaller than the sum of its proper divisors (9178139223).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8397471285 is an equidigital number, since it uses as much as digits as its factorization.

8397471285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47054 (or 47032 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 8397471285 is about 91637.7175894293. The cubic root of 8397471285 is about 2032.5887108787.

The spelling of 8397471285 in words is "eight billion, three hundred ninety-seven million, four hundred seventy-one thousand, two hundred eighty-five".