851039982 has 96 divisors (see below), whose sum is σ = 2117606400. Its totient is φ = 244835136.

The previous prime is 851039957. The next prime is 851040007. The reversal of 851039982 is 289930158.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (851039957) and next prime (851040007).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 350023 + ... + 352445.

It is an arithmetic number, because the mean of its divisors is an integer number (22058400).

Almost surely, 2^851039982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851039982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058803200).

851039982 is an abundant number, since it is smaller than the sum of its proper divisors (1266566418).

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

851039982 is a wasteful number, since it uses less digits than its factorization.

851039982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 851039982 is about 29172.5895662349. The cubic root of 851039982 is about 947.6544098966.

The spelling of 851039982 in words is "eight hundred fifty-one million, thirty-nine thousand, nine hundred eighty-two".