84347471 has 4 divisors (see below), whose sum is σ = 90835752. Its totient is φ = 77859192.

The previous prime is 84347443. The next prime is 84347477. The reversal of 84347471 is 17474348.

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 84347471 - 2¹⁸ = 84085327 is a prime.

It is a super-3 number, since 3×84347471³ (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 (84347477) 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, 3244121 + ... + 3244146.

It is an arithmetic number, because the mean of its divisors is an integer number (22708938).

Almost surely, 2^84347471 is an apocalyptic number.

84347471 is a deficient number, since it is larger than the sum of its proper divisors (6488281).

84347471 is a wasteful number, since it uses less digits than its factorization.

84347471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6488280.

The product of its digits is 75264, while the sum is 38.

The square root of 84347471 is about 9184.0879242307. The cubic root of 84347471 is about 438.5549546340.

The spelling of 84347471 in words is "eighty-four million, three hundred forty-seven thousand, four hundred seventy-one".