83958859 has 2 divisors, whose sum is σ = 83958860. Its totient is φ = 83958858.

The previous prime is 83958851. The next prime is 83958863. The reversal of 83958859 is 95885938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83958859 - 2³ = 83958851 is a prime.

It is not a weakly prime, because it can be changed into another prime (83958851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41979429 + 41979430.

It is an arithmetic number, because the mean of its divisors is an integer number (41979430).

Almost surely, 2^83958859 is an apocalyptic number.

83958859 is a deficient number, since it is larger than the sum of its proper divisors (1).

83958859 is an equidigital number, since it uses as much as digits as its factorization.

83958859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 55.

The square root of 83958859 is about 9162.9066894736. The cubic root of 83958859 is about 437.8804031870.

The spelling of 83958859 in words is "eighty-three million, nine hundred fifty-eight thousand, eight hundred fifty-nine".