84535859 has 2 divisors, whose sum is σ = 84535860. Its totient is φ = 84535858.

The previous prime is 84535837. The next prime is 84535877. The reversal of 84535859 is 95853548.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84535859 is a prime.

It is a super-2 number, since 2×84535859² = 14292622913735762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84535819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42267929 + 42267930.

It is an arithmetic number, because the mean of its divisors is an integer number (42267930).

Almost surely, 2^84535859 is an apocalyptic number.

84535859 is a deficient number, since it is larger than the sum of its proper divisors (1).

84535859 is an equidigital number, since it uses as much as digits as its factorization.

84535859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 47.

The square root of 84535859 is about 9194.3384210067. The cubic root of 84535859 is about 438.8812124231.

The spelling of 84535859 in words is "eighty-four million, five hundred thirty-five thousand, eight hundred fifty-nine".