84521814 has 16 divisors (see below), whose sum is σ = 182047152. Its totient is φ = 26006688.

The previous prime is 84521813. The next prime is 84521821. The reversal of 84521814 is 41812548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84521813) 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 7 ways as a sum of consecutive naturals, for example, 541729 + ... + 541884.

It is an arithmetic number, because the mean of its divisors is an integer number (11377947).

Almost surely, 2^84521814 is an apocalyptic number.

84521814 is an abundant number, since it is smaller than the sum of its proper divisors (97525338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84521814 is a wasteful number, since it uses less digits than its factorization.

84521814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083631.

The product of its digits is 10240, while the sum is 33.

The square root of 84521814 is about 9193.5746040373. The cubic root of 84521814 is about 438.8569054678.

The spelling of 84521814 in words is "eighty-four million, five hundred twenty-one thousand, eight hundred fourteen".