84528399 has 4 divisors (see below), whose sum is σ = 112704536. Its totient is φ = 56352264.

The previous prime is 84528361. The next prime is 84528469. The reversal of 84528399 is 99382548.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 84528399 - 2⁷ = 84528271 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 (84528349) 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, 14088064 + ... + 14088069.

It is an arithmetic number, because the mean of its divisors is an integer number (28176134).

Almost surely, 2^84528399 is an apocalyptic number.

84528399 is a deficient number, since it is larger than the sum of its proper divisors (28176137).

84528399 is a wasteful number, since it uses less digits than its factorization.

84528399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28176136.

The product of its digits is 622080, while the sum is 48.

The square root of 84528399 is about 9193.9327276199. The cubic root of 84528399 is about 438.8683021221.

The spelling of 84528399 in words is "eighty-four million, five hundred twenty-eight thousand, three hundred ninety-nine".