84897189 has 48 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 49800960.

The previous prime is 84897173. The next prime is 84897191. The reversal of 84897189 is 98179848.

It is not a de Polignac number, because 84897189 - 2⁴ = 84897173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84897139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 322672 + ... + 322934.

It is an arithmetic number, because the mean of its divisors is an integer number (2882880).

Almost surely, 2^84897189 is an apocalyptic number.

84897189 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

84897189 is a deficient number, since it is larger than the sum of its proper divisors (53481051).

84897189 is a wasteful number, since it uses less digits than its factorization.

84897189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 399 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 84897189 is about 9213.9670609353. The cubic root of 84897189 is about 439.5056241442.

The spelling of 84897189 in words is "eighty-four million, eight hundred ninety-seven thousand, one hundred eighty-nine".