84406556 has 12 divisors (see below), whose sum is σ = 159073992. Its totient is φ = 38956848.

The previous prime is 84406519. The next prime is 84406571. The reversal of 84406556 is 65560448.

It is a super-2 number, since 2×84406556² = 14248933391562272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 811550 + ... + 811653.

It is an arithmetic number, because the mean of its divisors is an integer number (13256166).

Almost surely, 2^84406556 is an apocalyptic number.

It is an amenable number.

84406556 is a deficient number, since it is larger than the sum of its proper divisors (74667436).

84406556 is a wasteful number, since it uses less digits than its factorization.

84406556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623220 (or 1623218 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 84406556 is about 9187.3040659380. The cubic root of 84406556 is about 438.6573326153.

The spelling of 84406556 in words is "eighty-four million, four hundred six thousand, five hundred fifty-six".