84213799 has 2 divisors, whose sum is σ = 84213800. Its totient is φ = 84213798.

The previous prime is 84213797. The next prime is 84213803. The reversal of 84213799 is 99731248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84213799 - 2¹ = 84213797 is a prime.

Together with 84213797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84213791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42106899 + 42106900.

It is an arithmetic number, because the mean of its divisors is an integer number (42106900).

Almost surely, 2^84213799 is an apocalyptic number.

84213799 is a deficient number, since it is larger than the sum of its proper divisors (1).

84213799 is an equidigital number, since it uses as much as digits as its factorization.

84213799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 84213799 is about 9176.8076693369. The cubic root of 84213799 is about 438.3231614244.

It can be divided in two parts, 842 and 13799, that added together give a palindrome (14641).

The spelling of 84213799 in words is "eighty-four million, two hundred thirteen thousand, seven hundred ninety-nine".