84085191 has 6 divisors (see below), whose sum is σ = 121456400. Its totient is φ = 56056788.

The previous prime is 84085159. The next prime is 84085193. The reversal of 84085191 is 19158048.

It is not a de Polignac number, because 84085191 - 2⁵ = 84085159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84085193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4671391 + ... + 4671408.

Almost surely, 2^84085191 is an apocalyptic number.

84085191 is a deficient number, since it is larger than the sum of its proper divisors (37371209).

84085191 is a wasteful number, since it uses less digits than its factorization.

84085191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342805 (or 9342802 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 84085191 is about 9169.7977622192. The cubic root of 84085191 is about 438.0999177815.

The spelling of 84085191 in words is "eighty-four million, eighty-five thousand, one hundred ninety-one".