83347819 has 4 divisors (see below), whose sum is σ = 83381400. Its totient is φ = 83314240.

The previous prime is 83347801. The next prime is 83347829. The reversal of 83347819 is 91874338.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91874338 = 2 ⋅45937169.

It is a cyclic number.

It is not a de Polignac number, because 83347819 - 2¹⁵ = 83315051 is a prime.

It is a super-2 number, since 2×83347819² = 13893717864113522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83347829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12742 + ... + 18139.

It is an arithmetic number, because the mean of its divisors is an integer number (20845350).

Almost surely, 2^83347819 is an apocalyptic number.

83347819 is a deficient number, since it is larger than the sum of its proper divisors (33581).

83347819 is a wasteful number, since it uses less digits than its factorization.

83347819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33580.

The product of its digits is 145152, while the sum is 43.

The square root of 83347819 is about 9129.5026699158. The cubic root of 83347819 is about 436.8155396927.

The spelling of 83347819 in words is "eighty-three million, three hundred forty-seven thousand, eight hundred nineteen".