84959471 has 2 divisors, whose sum is σ = 84959472. Its totient is φ = 84959470.

The previous prime is 84959467. The next prime is 84959491. The reversal of 84959471 is 17495948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84959471 - 2² = 84959467 is a prime.

It is a super-3 number, since 3×84959471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84959411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42479735 + 42479736.

It is an arithmetic number, because the mean of its divisors is an integer number (42479736).

Almost surely, 2^84959471 is an apocalyptic number.

84959471 is a deficient number, since it is larger than the sum of its proper divisors (1).

84959471 is an equidigital number, since it uses as much as digits as its factorization.

84959471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 84959471 is about 9217.3462015919. The cubic root of 84959471 is about 439.6130741022.

It can be divided in two parts, 8495947 and 1, that added together give a palindrome (8495948).

The spelling of 84959471 in words is "eighty-four million, nine hundred fifty-nine thousand, four hundred seventy-one".