84000911 has 2 divisors, whose sum is σ = 84000912. Its totient is φ = 84000910.

The previous prime is 84000869. The next prime is 84000913. The reversal of 84000911 is 11900048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84000911 is a prime.

Together with 84000913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84000913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42000455 + 42000456.

It is an arithmetic number, because the mean of its divisors is an integer number (42000456).

Almost surely, 2^84000911 is an apocalyptic number.

84000911 is a deficient number, since it is larger than the sum of its proper divisors (1).

84000911 is an equidigital number, since it uses as much as digits as its factorization.

84000911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 84000911 is about 9165.2010889014. The cubic root of 84000911 is about 437.9534972140.

Adding to 84000911 its reverse (11900048), we get a palindrome (95900959).

The spelling of 84000911 in words is "eighty-four million, nine hundred eleven", and thus it is an aban number.