84398243 has 2 divisors, whose sum is σ = 84398244. Its totient is φ = 84398242.

The previous prime is 84398239. The next prime is 84398257. The reversal of 84398243 is 34289348.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84398243 - 2² = 84398239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84398243.

It is not a weakly prime, because it can be changed into another prime (84394243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42199121 + 42199122.

It is an arithmetic number, because the mean of its divisors is an integer number (42199122).

Almost surely, 2^84398243 is an apocalyptic number.

84398243 is a deficient number, since it is larger than the sum of its proper divisors (1).

84398243 is an equidigital number, since it uses as much as digits as its factorization.

84398243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 84398243 is about 9186.8516369864. The cubic root of 84398243 is about 438.6429313717.

The spelling of 84398243 in words is "eighty-four million, three hundred ninety-eight thousand, two hundred forty-three".