855530984 has 144 divisors (see below), whose sum is σ = 2173775940. Its totient is φ = 313420800.

The previous prime is 855530971. The next prime is 855530987. The reversal of 855530984 is 489035558.

It can be written as a sum of positive squares in 2 ways, for example, as 811680100 + 43850884 = 28490^2 + 6622^2 .

It is not an unprimeable number, because it can be changed into a prime (855530987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 805814 + ... + 806874.

Almost surely, 2^855530984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855530984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086887970).

855530984 is an abundant number, since it is smaller than the sum of its proper divisors (1318244956).

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

855530984 is a wasteful number, since it uses less digits than its factorization.

855530984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The square root of 855530984 is about 29249.4612599959. The cubic root of 855530984 is about 949.3184341275.

The spelling of 855530984 in words is "eight hundred fifty-five million, five hundred thirty thousand, nine hundred eighty-four".