84255247 has 8 divisors (see below), whose sum is σ = 90544176. Its totient is φ = 78114432.

The previous prime is 84255191. The next prime is 84255251. The reversal of 84255247 is 74255248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84255247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84255547) 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 7 ways as a sum of consecutive naturals, for example, 35848 + ... + 38125.

It is an arithmetic number, because the mean of its divisors is an integer number (11318022).

Almost surely, 2^84255247 is an apocalyptic number.

84255247 is a deficient number, since it is larger than the sum of its proper divisors (6288929).

84255247 is a wasteful number, since it uses less digits than its factorization.

84255247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74057.

The product of its digits is 89600, while the sum is 37.

The square root of 84255247 is about 9179.0656931956. The cubic root of 84255247 is about 438.3950603248.

Subtracting from 84255247 its reverse (74255248), we obtain a palindrome (9999999).

The spelling of 84255247 in words is "eighty-four million, two hundred fifty-five thousand, two hundred forty-seven".