84691998 has 24 divisors (see below), whose sum is σ = 185218488. Its totient is φ = 27966192.

The previous prime is 84691993. The next prime is 84692009. The reversal of 84691998 is 89919648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84691991) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 20061 + ... + 23912.

It is an arithmetic number, because the mean of its divisors is an integer number (7717437).

Almost surely, 2^84691998 is an apocalyptic number.

84691998 is an abundant number, since it is smaller than the sum of its proper divisors (100526490).

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

84691998 is a wasteful number, since it uses less digits than its factorization.

84691998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44088 (or 44085 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 84691998 is about 9202.8255443641. The cubic root of 84691998 is about 439.1512529631.

The spelling of 84691998 in words is "eighty-four million, six hundred ninety-one thousand, nine hundred ninety-eight".