83408287 has 2 divisors, whose sum is σ = 83408288. Its totient is φ = 83408286.

The previous prime is 83408251. The next prime is 83408293. The reversal of 83408287 is 78280438.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83408287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83408587) 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 as a sum of consecutive naturals, namely, 41704143 + 41704144.

It is an arithmetic number, because the mean of its divisors is an integer number (41704144).

Almost surely, 2^83408287 is an apocalyptic number.

83408287 is a deficient number, since it is larger than the sum of its proper divisors (1).

83408287 is an equidigital number, since it uses as much as digits as its factorization.

83408287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 83408287 is about 9132.8137504276. The cubic root of 83408287 is about 436.9211492431.

The spelling of 83408287 in words is "eighty-three million, four hundred eight thousand, two hundred eighty-seven".