84246221 has 8 divisors (see below), whose sum is σ = 85296888. Its totient is φ = 83200000.

The previous prime is 84246193. The next prime is 84246223. The reversal of 84246221 is 12264248.

It can be written as a sum of positive squares in 4 ways, for example, as 55204900 + 29041321 = 7430^2 + 5389^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84246221 - 2²⁶ = 17137357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84246223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51821 + ... + 53421.

It is an arithmetic number, because the mean of its divisors is an integer number (10662111).

Almost surely, 2^84246221 is an apocalyptic number.

It is an amenable number.

84246221 is a deficient number, since it is larger than the sum of its proper divisors (1050667).

84246221 is a wasteful number, since it uses less digits than its factorization.

84246221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223.

The product of its digits is 6144, while the sum is 29.

The square root of 84246221 is about 9178.5740177873. The cubic root of 84246221 is about 438.3794051371.

The spelling of 84246221 in words is "eighty-four million, two hundred forty-six thousand, two hundred twenty-one".