83916819 has 24 divisors (see below), whose sum is σ = 139007232. Its totient is φ = 47787120.

The previous prime is 83916809. The next prime is 83916823. The reversal of 83916819 is 91861938.

It is not a de Polignac number, because 83916819 - 2¹⁵ = 83884051 is a prime.

It is a super-2 number, since 2×83916819² = 14084065022157522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83916809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17452 + ... + 21734.

It is an arithmetic number, because the mean of its divisors is an integer number (5791968).

Almost surely, 2^83916819 is an apocalyptic number.

83916819 is a deficient number, since it is larger than the sum of its proper divisors (55090413).

83916819 is a wasteful number, since it uses less digits than its factorization.

83916819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4604 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 83916819 is about 9160.6123703604. The cubic root of 83916819 is about 437.8073056179.

It can be divided in two parts, 839 and 16819, that multiplied together give a palindrome (14111141).

The spelling of 83916819 in words is "eighty-three million, nine hundred sixteen thousand, eight hundred nineteen".