84369217 has 4 divisors (see below), whose sum is σ = 84390336. Its totient is φ = 84348100.

The previous prime is 84369211. The next prime is 84369227. The reversal of 84369217 is 71296348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84369217 - 2³ = 84369209 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. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84369217.

It is not an unprimeable number, because it can be changed into a prime (84369211) 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 3 ways as a sum of consecutive naturals, for example, 2533 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (21097584).

Almost surely, 2^84369217 is an apocalyptic number.

It is an amenable number.

84369217 is a deficient number, since it is larger than the sum of its proper divisors (21119).

84369217 is a wasteful number, since it uses less digits than its factorization.

84369217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21118.

The product of its digits is 72576, while the sum is 40.

The square root of 84369217 is about 9185.2717433944. The cubic root of 84369217 is about 438.5926400025.

The spelling of 84369217 in words is "eighty-four million, three hundred sixty-nine thousand, two hundred seventeen".