840998000 has 40 divisors (see below), whose sum is σ = 2033538000. Its totient is φ = 336398400.

The previous prime is 840997981. The next prime is 840998009. The reversal of 840998000 is 899048.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840998009) 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 7 ways as a sum of consecutive naturals, for example, 208250 + ... + 212249.

It is an arithmetic number, because the mean of its divisors is an integer number (50838450).

Almost surely, 2^840998000 is an apocalyptic number.

840998000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

840998000 is an abundant number, since it is smaller than the sum of its proper divisors (1192540000).

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

840998000 is a wasteful number, since it uses less digits than its factorization.

840998000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420522 (or 420506 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 840998000 is about 28999.9655172209. The cubic root of 840998000 is about 943.9123194921.

The spelling of 840998000 in words is "eight hundred forty million, nine hundred ninety-eight thousand".