84385998 has 24 divisors (see below), whose sum is σ = 189142200. Its totient is φ = 27158544.

The previous prime is 84385991. The next prime is 84386021. The reversal of 84385998 is 89958348.

It is a happy number.

84385998 is a `hidden beast` number, since 8 + 43 + 8 + 599 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84385991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80308 + ... + 81351.

It is an arithmetic number, because the mean of its divisors is an integer number (7880925).

Almost surely, 2^84385998 is an apocalyptic number.

84385998 is an abundant number, since it is smaller than the sum of its proper divisors (104756202).

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

84385998 is a wasteful number, since it uses less digits than its factorization.

84385998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161696 (or 161693 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 84385998 is about 9186.1851712231. The cubic root of 84385998 is about 438.6217167023.

The spelling of 84385998 in words is "eighty-four million, three hundred eighty-five thousand, nine hundred ninety-eight".