84240189 has 16 divisors (see below), whose sum is σ = 136146240. Its totient is φ = 51054480.

The previous prime is 84240187. The next prime is 84240209. The reversal of 84240189 is 98104248.

It is not a de Polignac number, because 84240189 - 2¹ = 84240187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84240187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141522 + ... + 142115.

It is an arithmetic number, because the mean of its divisors is an integer number (8509140).

Almost surely, 2^84240189 is an apocalyptic number.

It is an amenable number.

84240189 is a deficient number, since it is larger than the sum of its proper divisors (51906051).

84240189 is a wasteful number, since it uses less digits than its factorization.

84240189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283657 (or 283651 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 84240189 is about 9178.2454205583. The cubic root of 84240189 is about 438.3689422833.

The spelling of 84240189 in words is "eighty-four million, two hundred forty thousand, one hundred eighty-nine".