83959859 has 2 divisors, whose sum is σ = 83959860. Its totient is φ = 83959858.

The previous prime is 83959853. The next prime is 83959877. The reversal of 83959859 is 95895938.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83959859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83959853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41979929 + 41979930.

It is an arithmetic number, because the mean of its divisors is an integer number (41979930).

Almost surely, 2^83959859 is an apocalyptic number.

83959859 is a deficient number, since it is larger than the sum of its proper divisors (1).

83959859 is an equidigital number, since it uses as much as digits as its factorization.

83959859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 56.

The square root of 83959859 is about 9162.9612571483. The cubic root of 83959859 is about 437.8821416522.

The spelling of 83959859 in words is "eighty-three million, nine hundred fifty-nine thousand, eight hundred fifty-nine".