83359813 has 2 divisors, whose sum is σ = 83359814. Its totient is φ = 83359812.

The previous prime is 83359781. The next prime is 83359817. The reversal of 83359813 is 31895338.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 5602689 = 8818^2 + 2367^2 .

It is a cyclic number.

It is not a de Polignac number, because 83359813 - 2⁵ = 83359781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83359817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41679906 + 41679907.

It is an arithmetic number, because the mean of its divisors is an integer number (41679907).

Almost surely, 2^83359813 is an apocalyptic number.

It is an amenable number.

83359813 is a deficient number, since it is larger than the sum of its proper divisors (1).

83359813 is an equidigital number, since it uses as much as digits as its factorization.

83359813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 83359813 is about 9130.1595276315. The cubic root of 83359813 is about 436.8364917078.

The spelling of 83359813 in words is "eighty-three million, three hundred fifty-nine thousand, eight hundred thirteen".