83447 has 12 divisors (see below), whose sum is σ = 105336. Its totient is φ = 65520.

The previous prime is 83443. The next prime is 83449. The reversal of 83447 is 74438.

It is not a de Polignac number, because 83447 - 2² = 83443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572 + ... + 702.

It is an arithmetic number, because the mean of its divisors is an integer number (8778).

2⁸³⁴⁴⁷ is an apocalyptic number.

83447 is a deficient number, since it is larger than the sum of its proper divisors (21889).

83447 is a wasteful number, since it uses less digits than its factorization.

83447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 151 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 83447 is about 288.8719439475. The cubic root of 83447 is about 43.6988736101.

Subtracting from 83447 its reverse (74438), we obtain a palindrome (9009).

The spelling of 83447 in words is "eighty-three thousand, four hundred forty-seven".