84089519 has 2 divisors, whose sum is σ = 84089520. Its totient is φ = 84089518.

The previous prime is 84089513. The next prime is 84089539. The reversal of 84089519 is 91598048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84089519 - 2⁸ = 84089263 is a prime.

It is a super-2 number, since 2×84089519² = 14142094411302722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84089519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84089513) 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, 42044759 + 42044760.

It is an arithmetic number, because the mean of its divisors is an integer number (42044760).

Almost surely, 2^84089519 is an apocalyptic number.

84089519 is a deficient number, since it is larger than the sum of its proper divisors (1).

84089519 is an equidigital number, since it uses as much as digits as its factorization.

84089519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 84089519 is about 9170.0337513010. The cubic root of 84089519 is about 438.1074342216.

The spelling of 84089519 in words is "eighty-four million, eighty-nine thousand, five hundred nineteen".