84709081 has 8 divisors (see below), whose sum is σ = 87674624. Its totient is φ = 81758160.

The previous prime is 84709067. The next prime is 84709103. The reversal of 84709081 is 18090748.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-84709081 is a prime.

It is a super-2 number, since 2×84709081² = 14351256807729122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84709081.

It is not an unprimeable number, because it can be changed into a prime (84709481) 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 7 ways as a sum of consecutive naturals, for example, 8866 + ... + 15748.

It is an arithmetic number, because the mean of its divisors is an integer number (10959328).

Almost surely, 2^84709081 is an apocalyptic number.

It is an amenable number.

84709081 is a deficient number, since it is larger than the sum of its proper divisors (2965543).

84709081 is a wasteful number, since it uses less digits than its factorization.

84709081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 84709081 is about 9203.7536364247. The cubic root of 84709081 is about 439.1807776592.

The spelling of 84709081 in words is "eighty-four million, seven hundred nine thousand, eighty-one".