83836221 has 8 divisors (see below), whose sum is σ = 127750464. Its totient is φ = 47906400.

The previous prime is 83836217. The next prime is 83836237. The reversal of 83836221 is 12263838.

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

It is not a de Polignac number, because 83836221 - 2² = 83836217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83835221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996080 + ... + 1996121.

It is an arithmetic number, because the mean of its divisors is an integer number (15968808).

Almost surely, 2^83836221 is an apocalyptic number.

It is an amenable number.

83836221 is a deficient number, since it is larger than the sum of its proper divisors (43914243).

83836221 is a wasteful number, since it uses less digits than its factorization.

83836221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992211.

The product of its digits is 13824, while the sum is 33.

The square root of 83836221 is about 9156.2121535054. The cubic root of 83836221 is about 437.6670965528.

The spelling of 83836221 in words is "eighty-three million, eight hundred thirty-six thousand, two hundred twenty-one".