840118998 has 16 divisors (see below), whose sum is σ = 1680698880. Its totient is φ = 279962856.

The previous prime is 840118997. The next prime is 840119041. The reversal of 840118998 is 899811048.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840118997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7311 + ... + 41637.

It is an arithmetic number, because the mean of its divisors is an integer number (105043680).

Almost surely, 2^840118998 is an apocalyptic number.

840118998 is an abundant number, since it is smaller than the sum of its proper divisors (840579882).

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

840118998 is a wasteful number, since it uses less digits than its factorization.

840118998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38411.

The product of its (nonzero) digits is 165888, while the sum is 48.

The square root of 840118998 is about 28984.8063302138. The cubic root of 840118998 is about 943.5833492094.

The spelling of 840118998 in words is "eight hundred forty million, one hundred eighteen thousand, nine hundred ninety-eight".