84523986 has 20 divisors (see below), whose sum is σ = 189396702. Its totient is φ = 28174608.

The previous prime is 84523973. The next prime is 84523987. The reversal of 84523986 is 68932548.

It can be written as a sum of positive squares in only one way, i.e., 59213025 + 25310961 = 7695^2 + 5031^2 .

It is not an unprimeable number, because it can be changed into a prime (84523987) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 260715 + ... + 261038.

Almost surely, 2^84523986 is an apocalyptic number.

84523986 is an abundant number, since it is smaller than the sum of its proper divisors (104872716).

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

84523986 is a wasteful number, since it uses less digits than its factorization.

84523986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521767 (or 521758 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 84523986 is about 9193.6927292574. The cubic root of 84523986 is about 438.8606646119.

The spelling of 84523986 in words is "eighty-four million, five hundred twenty-three thousand, nine hundred eighty-six".