84817841 has 2 divisors, whose sum is σ = 84817842. Its totient is φ = 84817840.

The previous prime is 84817793. The next prime is 84817849. The reversal of 84817841 is 14871848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69639025 + 15178816 = 8345^2 + 3896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84817841 is a prime.

It is not a weakly prime, because it can be changed into another prime (84817849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42408920 + 42408921.

It is an arithmetic number, because the mean of its divisors is an integer number (42408921).

Almost surely, 2^84817841 is an apocalyptic number.

It is an amenable number.

84817841 is a deficient number, since it is larger than the sum of its proper divisors (1).

84817841 is an equidigital number, since it uses as much as digits as its factorization.

84817841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57344, while the sum is 41.

The square root of 84817841 is about 9209.6602000291. The cubic root of 84817841 is about 439.3686554839.

It can be divided in two parts, 84817 and 841, that added together give a palindrome (85658).

The spelling of 84817841 in words is "eighty-four million, eight hundred seventeen thousand, eight hundred forty-one".