84848591 has 2 divisors, whose sum is σ = 84848592. Its totient is φ = 84848590.

The previous prime is 84848567. The next prime is 84848593. The reversal of 84848591 is 19584848.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84848591 is a prime.

Together with 84848593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84848593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42424295 + 42424296.

It is an arithmetic number, because the mean of its divisors is an integer number (42424296).

Almost surely, 2^84848591 is an apocalyptic number.

84848591 is a deficient number, since it is larger than the sum of its proper divisors (1).

84848591 is an equidigital number, since it uses as much as digits as its factorization.

84848591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 47.

The square root of 84848591 is about 9211.3294914469. The cubic root of 84848591 is about 439.4217455477.

The spelling of 84848591 in words is "eighty-four million, eight hundred forty-eight thousand, five hundred ninety-one".