84097221 has 8 divisors (see below), whose sum is σ = 120755040. Its totient is φ = 51752112.

The previous prime is 84097219. The next prime is 84097253. The reversal of 84097221 is 12279048.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84097221 - 2¹ = 84097219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84097271) 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 7 ways as a sum of consecutive naturals, for example, 1078131 + ... + 1078208.

It is an arithmetic number, because the mean of its divisors is an integer number (15094380).

Almost surely, 2^84097221 is an apocalyptic number.

It is an amenable number.

84097221 is a deficient number, since it is larger than the sum of its proper divisors (36657819).

84097221 is a wasteful number, since it uses less digits than its factorization.

84097221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156355.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 84097221 is about 9170.4536965191. The cubic root of 84097221 is about 438.1208096517.

The spelling of 84097221 in words is "eighty-four million, ninety-seven thousand, two hundred twenty-one".