84621994 has 8 divisors (see below), whose sum is σ = 127166688. Its totient is φ = 42233100.

The previous prime is 84621967. The next prime is 84622003. The reversal of 84621994 is 49912648.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 84621994.

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, 37582 + ... + 39769.

It is an arithmetic number, because the mean of its divisors is an integer number (15895836).

Almost surely, 2^84621994 is an apocalyptic number.

84621994 is a deficient number, since it is larger than the sum of its proper divisors (42544694).

84621994 is a wasteful number, since it uses less digits than its factorization.

84621994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77900.

The product of its digits is 124416, while the sum is 43.

The square root of 84621994 is about 9199.0213609927. The cubic root of 84621994 is about 439.0302229596.

The spelling of 84621994 in words is "eighty-four million, six hundred twenty-one thousand, nine hundred ninety-four".