84243397 has 24 divisors (see below), whose sum is σ = 105719040. Its totient is φ = 66709440.

The previous prime is 84243361. The next prime is 84243403. The reversal of 84243397 is 79334248.

It is not a de Polignac number, because 84243397 - 2¹¹ = 84241349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84243997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37068 + ... + 39274.

It is an arithmetic number, because the mean of its divisors is an integer number (4404960).

Almost surely, 2^84243397 is an apocalyptic number.

It is an amenable number.

84243397 is a deficient number, since it is larger than the sum of its proper divisors (21475643).

84243397 is a wasteful number, since it uses less digits than its factorization.

84243397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2274 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 84243397 is about 9178.4201799656. The cubic root of 84243397 is about 438.3745068075.

The spelling of 84243397 in words is "eighty-four million, two hundred forty-three thousand, three hundred ninety-seven".