84591189 has 16 divisors (see below), whose sum is σ = 125509440. Its totient is φ = 56309040.

The previous prime is 84591181. The next prime is 84591197. The reversal of 84591189 is 98119548.

It is an interprime number because it is at equal distance from previous prime (84591181) and next prime (84591197).

It is not a de Polignac number, because 84591189 - 2³ = 84591181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84591181) 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 15 ways as a sum of consecutive naturals, for example, 19554 + ... + 23484.

It is an arithmetic number, because the mean of its divisors is an integer number (7844340).

Almost surely, 2^84591189 is an apocalyptic number.

It is an amenable number.

84591189 is a deficient number, since it is larger than the sum of its proper divisors (40918251).

84591189 is a wasteful number, since it uses less digits than its factorization.

84591189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737 (or 4731 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 84591189 is about 9197.3468456941. The cubic root of 84591189 is about 438.9769430072.

The spelling of 84591189 in words is "eighty-four million, five hundred ninety-one thousand, one hundred eighty-nine".