84512843 has 2 divisors, whose sum is σ = 84512844. Its totient is φ = 84512842.

The previous prime is 84512837. The next prime is 84512941. The reversal of 84512843 is 34821548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84512843 - 2¹² = 84508747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (84512543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42256421 + 42256422.

It is an arithmetic number, because the mean of its divisors is an integer number (42256422).

Almost surely, 2^84512843 is an apocalyptic number.

84512843 is a deficient number, since it is larger than the sum of its proper divisors (1).

84512843 is an equidigital number, since it uses as much as digits as its factorization.

84512843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 35.

The square root of 84512843 is about 9193.0866959906. The cubic root of 84512843 is about 438.8413784127.

The spelling of 84512843 in words is "eighty-four million, five hundred twelve thousand, eight hundred forty-three".