84393189 has 12 divisors (see below), whose sum is σ = 125196396. Its totient is φ = 54741312.

The previous prime is 84393181. The next prime is 84393203. The reversal of 84393189 is 98139348.

84393189 is a `hidden beast` number, since 84 + 393 + 189 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61496964 + 22896225 = 7842^2 + 4785^2 .

It is not a de Polignac number, because 84393189 - 2³ = 84393181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84393181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126384 + ... + 127049.

It is an arithmetic number, because the mean of its divisors is an integer number (10433033).

Almost surely, 2^84393189 is an apocalyptic number.

It is an amenable number.

84393189 is a deficient number, since it is larger than the sum of its proper divisors (40803207).

84393189 is a wasteful number, since it uses less digits than its factorization.

84393189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253476 (or 253473 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 84393189 is about 9186.5765658378. The cubic root of 84393189 is about 438.6341754800.

It can be divided in two parts, 8439 and 3189, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 84393189 in words is "eighty-four million, three hundred ninety-three thousand, one hundred eighty-nine".