84406986 has 48 divisors (see below), whose sum is σ = 189765888. Its totient is φ = 27086400.

The previous prime is 84406951. The next prime is 84406991. The reversal of 84406986 is 68960448.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184470 + ... + 184926.

It is an arithmetic number, because the mean of its divisors is an integer number (3953456).

Almost surely, 2^84406986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84406986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94882944).

84406986 is an abundant number, since it is smaller than the sum of its proper divisors (105358902).

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

84406986 is a wasteful number, since it uses less digits than its factorization.

84406986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 84406986 is about 9187.3274677678. The cubic root of 84406986 is about 438.6580775114.

The spelling of 84406986 in words is "eighty-four million, four hundred six thousand, nine hundred eighty-six".