84424799 has 2 divisors, whose sum is σ = 84424800. Its totient is φ = 84424798.

The previous prime is 84424783. The next prime is 84424801. The reversal of 84424799 is 99742448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84424799 - 2⁴ = 84424783 is a prime.

Together with 84424801, 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 (84424399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42212399 + 42212400.

It is an arithmetic number, because the mean of its divisors is an integer number (42212400).

Almost surely, 2^84424799 is an apocalyptic number.

84424799 is a deficient number, since it is larger than the sum of its proper divisors (1).

84424799 is an equidigital number, since it uses as much as digits as its factorization.

84424799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 84424799 is about 9188.2968497976. The cubic root of 84424799 is about 438.6889330408.

The spelling of 84424799 in words is "eighty-four million, four hundred twenty-four thousand, seven hundred ninety-nine".