84811471 has 4 divisors (see below), whose sum is σ = 84830200. Its totient is φ = 84792744.

The previous prime is 84811469. The next prime is 84811541. The reversal of 84811471 is 17411848.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84811471 - 2¹ = 84811469 is a prime.

It is a super-3 number, since 3×84811471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84211471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (21207550).

Almost surely, 2^84811471 is an apocalyptic number.

84811471 is a deficient number, since it is larger than the sum of its proper divisors (18729).

84811471 is a wasteful number, since it uses less digits than its factorization.

84811471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18728.

The product of its digits is 7168, while the sum is 34.

The square root of 84811471 is about 9209.3143610152. The cubic root of 84811471 is about 439.3576560355.

The spelling of 84811471 in words is "eighty-four million, eight hundred eleven thousand, four hundred seventy-one".