84809041 has 2 divisors, whose sum is σ = 84809042. Its totient is φ = 84809040.

The previous prime is 84809017. The next prime is 84809047. The reversal of 84809041 is 14090848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 34810000 = 7071^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 84809041 - 2¹⁵ = 84776273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84808988 and 84809006.

It is not a weakly prime, because it can be changed into another prime (84809047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42404520 + 42404521.

It is an arithmetic number, because the mean of its divisors is an integer number (42404521).

Almost surely, 2^84809041 is an apocalyptic number.

It is an amenable number.

84809041 is a deficient number, since it is larger than the sum of its proper divisors (1).

84809041 is an equidigital number, since it uses as much as digits as its factorization.

84809041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 84809041 is about 9209.1824284244. The cubic root of 84809041 is about 439.3534598685.

Adding to 84809041 its reverse (14090848), we get a palindrome (98899889).

The spelling of 84809041 in words is "eighty-four million, eight hundred nine thousand, forty-one".