84505471 has 2 divisors, whose sum is σ = 84505472. Its totient is φ = 84505470.

The previous prime is 84505459. The next prime is 84505493. The reversal of 84505471 is 17450548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84505471 - 2⁵ = 84505439 is a prime.

It is a super-3 number, since 3×84505471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84505451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42252735 + 42252736.

It is an arithmetic number, because the mean of its divisors is an integer number (42252736).

Almost surely, 2^84505471 is an apocalyptic number.

84505471 is a deficient number, since it is larger than the sum of its proper divisors (1).

84505471 is an equidigital number, since it uses as much as digits as its factorization.

84505471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 84505471 is about 9192.6857337777. The cubic root of 84505471 is about 438.8286180929.

It can be divided in two parts, 8450547 and 1, that added together give a palindrome (8450548).

The spelling of 84505471 in words is "eighty-four million, five hundred five thousand, four hundred seventy-one".