84771471 has 4 divisors (see below), whose sum is σ = 113028632. Its totient is φ = 56514312.

The previous prime is 84771461. The next prime is 84771493. The reversal of 84771471 is 17417748.

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

It is not a de Polignac number, because 84771471 - 2⁵ = 84771439 is a prime.

It is a super-3 number, since 3×84771471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84771451) 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, 14128576 + ... + 14128581.

It is an arithmetic number, because the mean of its divisors is an integer number (28257158).

Almost surely, 2^84771471 is an apocalyptic number.

84771471 is a deficient number, since it is larger than the sum of its proper divisors (28257161).

84771471 is a wasteful number, since it uses less digits than its factorization.

84771471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28257160.

The product of its digits is 43904, while the sum is 39.

The square root of 84771471 is about 9207.1423905575. The cubic root of 84771471 is about 439.2885731247.

The spelling of 84771471 in words is "eighty-four million, seven hundred seventy-one thousand, four hundred seventy-one".