84621418 has 16 divisors (see below), whose sum is σ = 145368000. Its totient is φ = 36190656.

The previous prime is 84621389. The next prime is 84621431. The reversal of 84621418 is 81412648.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930 + ... + 13042.

It is an arithmetic number, because the mean of its divisors is an integer number (9085500).

Almost surely, 2^84621418 is an apocalyptic number.

84621418 is a deficient number, since it is larger than the sum of its proper divisors (60746582).

84621418 is a wasteful number, since it uses less digits than its factorization.

84621418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12621.

The product of its digits is 12288, while the sum is 34.

The square root of 84621418 is about 9198.9900532613. The cubic root of 84621418 is about 439.0292268357.

The spelling of 84621418 in words is "eighty-four million, six hundred twenty-one thousand, four hundred eighteen".