84225479 has 4 divisors (see below), whose sum is σ = 90704376. Its totient is φ = 77746584.

The previous prime is 84225413. The next prime is 84225553. The reversal of 84225479 is 97452248.

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 84225479 - 2²⁴ = 67448263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84225179) 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, 3239429 + ... + 3239454.

It is an arithmetic number, because the mean of its divisors is an integer number (22676094).

Almost surely, 2^84225479 is an apocalyptic number.

84225479 is a deficient number, since it is larger than the sum of its proper divisors (6478897).

84225479 is a wasteful number, since it uses less digits than its factorization.

84225479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478896.

The product of its digits is 161280, while the sum is 41.

The square root of 84225479 is about 9177.4440341524. Note that the first 3 decimals coincide. The cubic root of 84225479 is about 438.3434248409.

The spelling of 84225479 in words is "eighty-four million, two hundred twenty-five thousand, four hundred seventy-nine".