84569812 has 12 divisors (see below), whose sum is σ = 150206560. Its totient is φ = 41653656.

The previous prime is 84569809. The next prime is 84569819. The reversal of 84569812 is 21896548.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84569819) 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, 157512 + ... + 158047.

Almost surely, 2^84569812 is an apocalyptic number.

It is an amenable number.

84569812 is a deficient number, since it is larger than the sum of its proper divisors (65636748).

84569812 is a wasteful number, since it uses less digits than its factorization.

84569812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315630 (or 315628 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 84569812 is about 9196.1846436443. The cubic root of 84569812 is about 438.9399620055.

The spelling of 84569812 in words is "eighty-four million, five hundred sixty-nine thousand, eight hundred twelve".