840984931900 has 36 divisors (see below), whose sum is σ = 1830196563048. Its totient is φ = 335424523840.

The previous prime is 840984931889. The next prime is 840984931933. The reversal of 840984931900 is 9139489048.

It is a super-2 number, since 2×840984931900² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12083239 + ... + 12152638.

It is an arithmetic number, because the mean of its divisors is an integer number (50838793418).

Almost surely, 2^840984931900 is an apocalyptic number.

It is an amenable number.

840984931900 is an abundant number, since it is smaller than the sum of its proper divisors (989211631148).

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

840984931900 is a wasteful number, since it uses less digits than its factorization.

840984931900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24236238 (or 24236231 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 840984931900 in words is "eight hundred forty billion, nine hundred eighty-four million, nine hundred thirty-one thousand, nine hundred".