84543197 has 4 divisors (see below), whose sum is σ = 85032060. Its totient is φ = 84054336.

The previous prime is 84543157. The next prime is 84543211. The reversal of 84543197 is 79134548.

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 52041796 + 32501401 = 7214^2 + 5701^2 .

It is a cyclic number.

It is not a de Polignac number, because 84543197 - 2²² = 80348893 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 (84543127) 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, 244172 + ... + 244517.

It is an arithmetic number, because the mean of its divisors is an integer number (21258015).

Almost surely, 2^84543197 is an apocalyptic number.

It is an amenable number.

84543197 is a deficient number, since it is larger than the sum of its proper divisors (488863).

84543197 is a wasteful number, since it uses less digits than its factorization.

84543197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488862.

The product of its digits is 120960, while the sum is 41.

The square root of 84543197 is about 9194.7374622661. The cubic root of 84543197 is about 438.8939108495.

The spelling of 84543197 in words is "eighty-four million, five hundred forty-three thousand, one hundred ninety-seven".