84457885 has 16 divisors (see below), whose sum is σ = 104451120. Its totient is φ = 65528320.

The previous prime is 84457883. The next prime is 84457903. The reversal of 84457885 is 58875448.

It can be written as a sum of positive squares in 8 ways, for example, as 881721 + 83576164 = 939^2 + 9142^2 .

It is not a de Polignac number, because 84457885 - 2¹ = 84457883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84457883) 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 15 ways as a sum of consecutive naturals, for example, 21795 + ... + 25375.

It is an arithmetic number, because the mean of its divisors is an integer number (6528195).

Almost surely, 2^84457885 is an apocalyptic number.

It is an amenable number.

84457885 is a deficient number, since it is larger than the sum of its proper divisors (19993235).

84457885 is a wasteful number, since it uses less digits than its factorization.

84457885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its digits is 1433600, while the sum is 49.

The square root of 84457885 is about 9190.0971159178. The cubic root of 84457885 is about 438.7462328175.

The spelling of 84457885 in words is "eighty-four million, four hundred fifty-seven thousand, eight hundred eighty-five".