840158982 has 48 divisors (see below), whose sum is σ = 1966805568. Its totient is φ = 257662080.

The previous prime is 840158959. The next prime is 840159011. The reversal of 840158982 is 289851048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67507 + ... + 78977.

It is an arithmetic number, because the mean of its divisors is an integer number (40975116).

Almost surely, 2^840158982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840158982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983402784).

840158982 is an abundant number, since it is smaller than the sum of its proper divisors (1126646586).

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

840158982 is a wasteful number, since it uses less digits than its factorization.

840158982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805 (or 11802 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 840158982 is about 28985.4960626862. The cubic root of 840158982 is about 943.5983183737.

The spelling of 840158982 in words is "eight hundred forty million, one hundred fifty-eight thousand, nine hundred eighty-two".