83057839 has 4 divisors (see below), whose sum is σ = 83116456. Its totient is φ = 82999224.

The previous prime is 83057833. The next prime is 83057879. The reversal of 83057839 is 93875038.

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: 93875038 = 2 ⋅46937519.

It is a cyclic number.

It is not a de Polignac number, because 83057839 - 2³ = 83057831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83057795 and 83057804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83057831) 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, 27129 + ... + 30034.

It is an arithmetic number, because the mean of its divisors is an integer number (20779114).

Almost surely, 2^83057839 is an apocalyptic number.

83057839 is a deficient number, since it is larger than the sum of its proper divisors (58617).

83057839 is a wasteful number, since it uses less digits than its factorization.

83057839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58616.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 83057839 is about 9113.6073538418. The cubic root of 83057839 is about 436.3083680383.

The spelling of 83057839 in words is "eighty-three million, fifty-seven thousand, eight hundred thirty-nine".