84189013 has 2 divisors, whose sum is σ = 84189014. Its totient is φ = 84189012.

The previous prime is 84188999. The next prime is 84189029. The reversal of 84189013 is 31098148.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66699889 + 17489124 = 8167^2 + 4182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84189013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84189013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84189043) 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, 42094506 + 42094507.

It is an arithmetic number, because the mean of its divisors is an integer number (42094507).

Almost surely, 2^84189013 is an apocalyptic number.

It is an amenable number.

84189013 is a deficient number, since it is larger than the sum of its proper divisors (1).

84189013 is an equidigital number, since it uses as much as digits as its factorization.

84189013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 84189013 is about 9175.4571003302. The cubic root of 84189013 is about 438.2801544427.

The spelling of 84189013 in words is "eighty-four million, one hundred eighty-nine thousand, thirteen".