84844849 has 2 divisors, whose sum is σ = 84844850. Its totient is φ = 84844848.

The previous prime is 84844819. The next prime is 84844871. The reversal of 84844849 is 94844848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 10195249 = 8640^2 + 3193^2 .

It is a cyclic number.

It is not a de Polignac number, because 84844849 - 2⁵ = 84844817 is a prime.

It is not a weakly prime, because it can be changed into another prime (84844819) 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, 42422424 + 42422425.

It is an arithmetic number, because the mean of its divisors is an integer number (42422425).

Almost surely, 2^84844849 is an apocalyptic number.

It is an amenable number.

84844849 is a deficient number, since it is larger than the sum of its proper divisors (1).

84844849 is an equidigital number, since it uses as much as digits as its factorization.

84844849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1179648, while the sum is 49.

The square root of 84844849 is about 9211.1263697769. The cubic root of 84844849 is about 439.4152856473.

Subtracting 84844849 from its reverse (94844848), we obtain a palindrome (9999999).

The spelling of 84844849 in words is "eighty-four million, eight hundred forty-four thousand, eight hundred forty-nine".