84220986 has 32 divisors (see below), whose sum is σ = 181444608. Its totient is φ = 25985520.

The previous prime is 84220951. The next prime is 84220993. The reversal of 84220986 is 68902248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5566 + ... + 14121.

It is an arithmetic number, because the mean of its divisors is an integer number (5670144).

Almost surely, 2^84220986 is an apocalyptic number.

84220986 is an abundant number, since it is smaller than the sum of its proper divisors (97223622).

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

84220986 is a wasteful number, since it uses less digits than its factorization.

84220986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19746.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 84220986 is about 9177.1992459573. The cubic root of 84220986 is about 438.3356302398.

The spelling of 84220986 in words is "eighty-four million, two hundred twenty thousand, nine hundred eighty-six".