838905908860 has 24 divisors (see below), whose sum is σ = 1763711228160. Its totient is φ = 335179731264.

The previous prime is 838905908843. The next prime is 838905908933. The reversal of 838905908860 is 68809509838.

It is a junction number, because it is equal to n+sod(n) for n = 838905908792 and 838905908801.

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 7 ways as a sum of consecutive naturals, for example, 23896540 + ... + 23931619.

It is an arithmetic number, because the mean of its divisors is an integer number (73487967840).

Almost surely, 2^838905908860 is an apocalyptic number.

It is an amenable number.

838905908860 is an abundant number, since it is smaller than the sum of its proper divisors (924805319300).

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

838905908860 is a wasteful number, since it uses less digits than its factorization.

838905908860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47829045 (or 47829043 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 64.

The spelling of 838905908860 in words is "eight hundred thirty-eight billion, nine hundred five million, nine hundred eight thousand, eight hundred sixty".