83219863 has 4 divisors (see below), whose sum is σ = 83651248. Its totient is φ = 82788480.

The previous prime is 83219861. The next prime is 83219887. The reversal of 83219863 is 36891238.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36891238 = 2 ⋅18445619.

It is a cyclic number.

It is not a de Polignac number, because 83219863 - 2¹ = 83219861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83219861) 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, 215403 + ... + 215788.

It is an arithmetic number, because the mean of its divisors is an integer number (20912812).

Almost surely, 2^83219863 is an apocalyptic number.

83219863 is a deficient number, since it is larger than the sum of its proper divisors (431385).

83219863 is a wasteful number, since it uses less digits than its factorization.

83219863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431384.

The product of its digits is 62208, while the sum is 40.

The square root of 83219863 is about 9122.4921485305. The cubic root of 83219863 is about 436.5918913846.

The spelling of 83219863 in words is "eighty-three million, two hundred nineteen thousand, eight hundred sixty-three".