838540856 has 32 divisors (see below), whose sum is σ = 1612774800. Its totient is φ = 408495360.

The previous prime is 838540837. The next prime is 838540867. The reversal of 838540856 is 658045838.

It is a self number, because there is not a number n which added to its sum of digits gives 838540856.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 357335 + ... + 359673.

Almost surely, 2^838540856 is an apocalyptic number.

It is an amenable number.

838540856 is a deficient number, since it is larger than the sum of its proper divisors (774233944).

838540856 is a wasteful number, since it uses less digits than its factorization.

838540856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 47.

The square root of 838540856 is about 28957.5699256688. The cubic root of 838540856 is about 942.9921464912.

The spelling of 838540856 in words is "eight hundred thirty-eight million, five hundred forty thousand, eight hundred fifty-six".