83866091 has 2 divisors, whose sum is σ = 83866092. Its totient is φ = 83866090.

The previous prime is 83866043. The next prime is 83866127. The reversal of 83866091 is 19066838.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83866091 - 2¹⁴ = 83849707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83866021) 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, 41933045 + 41933046.

It is an arithmetic number, because the mean of its divisors is an integer number (41933046).

Almost surely, 2^83866091 is an apocalyptic number.

83866091 is a deficient number, since it is larger than the sum of its proper divisors (1).

83866091 is an equidigital number, since it uses as much as digits as its factorization.

83866091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 83866091 is about 9157.8431412642. The cubic root of 83866091 is about 437.7190691716.

The spelling of 83866091 in words is "eighty-three million, eight hundred sixty-six thousand, ninety-one".