84345243 has 4 divisors (see below), whose sum is σ = 112460328. Its totient is φ = 56230160.

The previous prime is 84345229. The next prime is 84345259. The reversal of 84345243 is 34254348.

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 84345243 - 2¹⁷ = 84214171 is a prime.

It is a super-2 number, since 2×84345243² = 14228240033458098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84345223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14057538 + ... + 14057543.

It is an arithmetic number, because the mean of its divisors is an integer number (28115082).

Almost surely, 2^84345243 is an apocalyptic number.

84345243 is a deficient number, since it is larger than the sum of its proper divisors (28115085).

84345243 is a wasteful number, since it uses less digits than its factorization.

84345243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28115084.

The product of its digits is 46080, while the sum is 33.

The square root of 84345243 is about 9183.9666266815. The cubic root of 84345243 is about 438.5510931902.

The spelling of 84345243 in words is "eighty-four million, three hundred forty-five thousand, two hundred forty-three".