84168791 has 4 divisors (see below), whose sum is σ = 96192912. Its totient is φ = 72144672.

The previous prime is 84168787. The next prime is 84168793. The reversal of 84168791 is 19786148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84168791 - 2² = 84168787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84168793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6012050 + ... + 6012063.

It is an arithmetic number, because the mean of its divisors is an integer number (24048228).

Almost surely, 2^84168791 is an apocalyptic number.

84168791 is a deficient number, since it is larger than the sum of its proper divisors (12024121).

84168791 is a wasteful number, since it uses less digits than its factorization.

84168791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12024120.

The product of its digits is 96768, while the sum is 44.

The square root of 84168791 is about 9174.3550727013. The cubic root of 84168791 is about 438.2450603504.

The spelling of 84168791 in words is "eighty-four million, one hundred sixty-eight thousand, seven hundred ninety-one".