83881117 has 2 divisors, whose sum is σ = 83881118. Its totient is φ = 83881116.

The previous prime is 83881099. The next prime is 83881123. The reversal of 83881117 is 71118838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76230361 + 7650756 = 8731^2 + 2766^2 .

It is a cyclic number.

It is not a de Polignac number, because 83881117 - 2⁷ = 83880989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83888117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41940558 + 41940559.

It is an arithmetic number, because the mean of its divisors is an integer number (41940559).

Almost surely, 2^83881117 is an apocalyptic number.

It is an amenable number.

83881117 is a deficient number, since it is larger than the sum of its proper divisors (1).

83881117 is an equidigital number, since it uses as much as digits as its factorization.

83881117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 37.

The square root of 83881117 is about 9158.6634942005. The cubic root of 83881117 is about 437.7452091522.

The spelling of 83881117 in words is "eighty-three million, eight hundred eighty-one thousand, one hundred seventeen".