84243361 has 2 divisors, whose sum is σ = 84243362. Its totient is φ = 84243360.

The previous prime is 84243311. The next prime is 84243403. The reversal of 84243361 is 16334248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78216336 + 6027025 = 8844^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 84243361 - 2²⁵ = 50688929 is a prime.

It is not a weakly prime, because it can be changed into another prime (84243301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42121680 + 42121681.

It is an arithmetic number, because the mean of its divisors is an integer number (42121681).

Almost surely, 2^84243361 is an apocalyptic number.

It is an amenable number.

84243361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84243361 is an equidigital number, since it uses as much as digits as its factorization.

84243361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 84243361 is about 9178.4182188436. The cubic root of 84243361 is about 438.3744443635.

The spelling of 84243361 in words is "eighty-four million, two hundred forty-three thousand, three hundred sixty-one".