84989994 has 16 divisors (see below), whose sum is σ = 170584032. Its totient is φ = 28229328.

The previous prime is 84989929. The next prime is 84990001. The reversal of 84989994 is 49998948.

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, 23329 + ... + 26724.

It is an arithmetic number, because the mean of its divisors is an integer number (10661502).

Almost surely, 2^84989994 is an apocalyptic number.

84989994 is an abundant number, since it is smaller than the sum of its proper divisors (85594038).

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

84989994 is a wasteful number, since it uses less digits than its factorization.

84989994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50341.

The product of its digits is 6718464, while the sum is 60.

The square root of 84989994 is about 9219.0017897818. The cubic root of 84989994 is about 439.6657137240.

The spelling of 84989994 in words is "eighty-four million, nine hundred eighty-nine thousand, nine hundred ninety-four".