84804859 has 2 divisors, whose sum is σ = 84804860. Its totient is φ = 84804858.

The previous prime is 84804833. The next prime is 84804899. The reversal of 84804859 is 95840848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84804859 - 2⁵ = 84804827 is a prime.

It is a super-2 number, since 2×84804859² = 14383728220019762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84804899) 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, 42402429 + 42402430.

It is an arithmetic number, because the mean of its divisors is an integer number (42402430).

Almost surely, 2^84804859 is an apocalyptic number.

84804859 is a deficient number, since it is larger than the sum of its proper divisors (1).

84804859 is an equidigital number, since it uses as much as digits as its factorization.

84804859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 84804859 is about 9208.9553696388. The cubic root of 84804859 is about 439.3462381291.

The spelling of 84804859 in words is "eighty-four million, eight hundred four thousand, eight hundred fifty-nine".