84081223 has 4 divisors (see below), whose sum is σ = 84323880. Its totient is φ = 83838568.

The previous prime is 84081199. The next prime is 84081233. The reversal of 84081223 is 32218048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84081223 - 2⁵ = 84081191 is a prime.

It is a super-2 number, since 2×84081223² = 14139304122351458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84081191 and 84081200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84081233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120808 + ... + 121501.

It is an arithmetic number, because the mean of its divisors is an integer number (21080970).

Almost surely, 2^84081223 is an apocalyptic number.

84081223 is a deficient number, since it is larger than the sum of its proper divisors (242657).

84081223 is a wasteful number, since it uses less digits than its factorization.

84081223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242656.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 84081223 is about 9169.5813972067. The cubic root of 84081223 is about 438.0930263269.

The spelling of 84081223 in words is "eighty-four million, eighty-one thousand, two hundred twenty-three".