84835221 has 16 divisors (see below), whose sum is σ = 114433536. Its totient is φ = 55901376.

The previous prime is 84835217. The next prime is 84835249. The reversal of 84835221 is 12253848.

It is not a de Polignac number, because 84835221 - 2² = 84835217 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 (84835291) 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, 115371 + ... + 116103.

It is an arithmetic number, because the mean of its divisors is an integer number (7152096).

Almost surely, 2^84835221 is an apocalyptic number.

It is an amenable number.

84835221 is a deficient number, since it is larger than the sum of its proper divisors (29598315).

84835221 is a wasteful number, since it uses less digits than its factorization.

84835221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 15360, while the sum is 33.

The square root of 84835221 is about 9210.6037261409. The cubic root of 84835221 is about 439.3986637370.

The spelling of 84835221 in words is "eighty-four million, eight hundred thirty-five thousand, two hundred twenty-one".