84168971 has 4 divisors (see below), whose sum is σ = 84207912. Its totient is φ = 84130032.

The previous prime is 84168911. The next prime is 84168977. The reversal of 84168971 is 17986148.

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 84168971 - 2⁶ = 84168907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84168977) 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, 16025 + ... + 20618.

It is an arithmetic number, because the mean of its divisors is an integer number (21051978).

Almost surely, 2^84168971 is an apocalyptic number.

84168971 is a deficient number, since it is larger than the sum of its proper divisors (38941).

84168971 is a wasteful number, since it uses less digits than its factorization.

84168971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38940.

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

The square root of 84168971 is about 9174.3648826499. The cubic root of 84168971 is about 438.2453727546.

The spelling of 84168971 in words is "eighty-four million, one hundred sixty-eight thousand, nine hundred seventy-one".