83557339 has 2 divisors, whose sum is σ = 83557340. Its totient is φ = 83557338.

The previous prime is 83557319. The next prime is 83557349. The reversal of 83557339 is 93375538.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83557339 - 2⁹ = 83556827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83557295 and 83557304.

It is not a weakly prime, because it can be changed into another prime (83557319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41778669 + 41778670.

It is an arithmetic number, because the mean of its divisors is an integer number (41778670).

Almost surely, 2^83557339 is an apocalyptic number.

83557339 is a deficient number, since it is larger than the sum of its proper divisors (1).

83557339 is an equidigital number, since it uses as much as digits as its factorization.

83557339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 43.

The square root of 83557339 is about 9140.9703533049. The cubic root of 83557339 is about 437.1812561598.

The spelling of 83557339 in words is "eighty-three million, five hundred fifty-seven thousand, three hundred thirty-nine".