84971045 has 4 divisors (see below), whose sum is σ = 101965260. Its totient is φ = 67976832.

The previous prime is 84971027. The next prime is 84971077. The reversal of 84971045 is 54017948.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29408929 + 55562116 = 5423^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 84971045 - 2⁸ = 84970789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8497100 + ... + 8497109.

It is an arithmetic number, because the mean of its divisors is an integer number (25491315).

Almost surely, 2^84971045 is an apocalyptic number.

It is an amenable number.

84971045 is a deficient number, since it is larger than the sum of its proper divisors (16994215).

84971045 is a wasteful number, since it uses less digits than its factorization.

84971045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16994214.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 84971045 is about 9217.9740181886. The cubic root of 84971045 is about 439.6330359759.

The spelling of 84971045 in words is "eighty-four million, nine hundred seventy-one thousand, forty-five".