83884221 has 16 divisors (see below), whose sum is σ = 130814400. Its totient is φ = 52979184.

The previous prime is 83884189. The next prime is 83884231. The reversal of 83884221 is 12248838.

It is a happy number.

It is not a de Polignac number, because 83884221 - 2⁵ = 83884189 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83884231) 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, 81246 + ... + 82271.

It is an arithmetic number, because the mean of its divisors is an integer number (8175900).

Almost surely, 2^83884221 is an apocalyptic number.

It is an amenable number.

83884221 is a deficient number, since it is larger than the sum of its proper divisors (46930179).

83884221 is a wasteful number, since it uses less digits than its factorization.

83884221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163545 (or 163539 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 83884221 is about 9158.8329496721. The cubic root of 83884221 is about 437.7506086367.

The spelling of 83884221 in words is "eighty-three million, eight hundred eighty-four thousand, two hundred twenty-one".