840887476836 has 48 divisors (see below), whose sum is σ = 2169761982528. Its totient is φ = 251323776000.

The previous prime is 840887476813. The next prime is 840887476873. The reversal of 840887476836 is 638674788048.

It is a super-2 number, since 2×840887476836² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43622965 + ... + 43642236.

It is an arithmetic number, because the mean of its divisors is an integer number (45203374636).

Almost surely, 2^840887476836 is an apocalyptic number.

It is an amenable number.

840887476836 is an abundant number, since it is smaller than the sum of its proper divisors (1328874505692).

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

840887476836 is a wasteful number, since it uses less digits than its factorization.

840887476836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87265292 (or 87265290 counting only the distinct ones).

The product of its (nonzero) digits is 346816512, while the sum is 69.

The spelling of 840887476836 in words is "eight hundred forty billion, eight hundred eighty-seven million, four hundred seventy-six thousand, eight hundred thirty-six".