84196439 has 2 divisors, whose sum is σ = 84196440. Its totient is φ = 84196438.

The previous prime is 84196433. The next prime is 84196447. The reversal of 84196439 is 93469148.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84196439 - 2²⁰ = 83147863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84196439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84196433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42098219 + 42098220.

It is an arithmetic number, because the mean of its divisors is an integer number (42098220).

Almost surely, 2^84196439 is an apocalyptic number.

84196439 is a deficient number, since it is larger than the sum of its proper divisors (1).

84196439 is an equidigital number, since it uses as much as digits as its factorization.

84196439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 84196439 is about 9175.8617578950. The cubic root of 84196439 is about 438.2930404185.

The spelling of 84196439 in words is "eighty-four million, one hundred ninety-six thousand, four hundred thirty-nine".