84008971 has 4 divisors (see below), whose sum is σ = 85962712. Its totient is φ = 82055232.

The previous prime is 84008957. The next prime is 84008983. The reversal of 84008971 is 17980048.

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 84008971 - 2¹⁹ = 83484683 is a prime.

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 84008971.

It is not an unprimeable number, because it can be changed into a prime (84008921) 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, 976806 + ... + 976891.

It is an arithmetic number, because the mean of its divisors is an integer number (21490678).

Almost surely, 2^84008971 is an apocalyptic number.

84008971 is a deficient number, since it is larger than the sum of its proper divisors (1953741).

84008971 is a wasteful number, since it uses less digits than its factorization.

84008971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953740.

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

The square root of 84008971 is about 9165.6407850188. The cubic root of 84008971 is about 437.9675041744.

It can be divided in two parts, 8400 and 8971, that added together give a palindrome (17371).

The spelling of 84008971 in words is "eighty-four million, eight thousand, nine hundred seventy-one".