84679911 has 14 divisors (see below), whose sum is σ = 126962880. Its totient is φ = 56452788.

The previous prime is 84679909. The next prime is 84679921. The reversal of 84679911 is 11997648.

It is a happy number.

It is not a de Polignac number, because 84679911 - 2¹ = 84679909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84679901) 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 in 13 ways as a sum of consecutive naturals, for example, 57351 + ... + 58808.

Almost surely, 2^84679911 is an apocalyptic number.

84679911 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84679911 is a deficient number, since it is larger than the sum of its proper divisors (42282969).

84679911 is an equidigital number, since it uses as much as digits as its factorization.

84679911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116177 (or 116162 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 84679911 is about 9202.1688204466. The cubic root of 84679911 is about 439.1303604985.

The spelling of 84679911 in words is "eighty-four million, six hundred seventy-nine thousand, nine hundred eleven".