388836856 has 8 divisors (see below), whose sum is σ = 729069120. Its totient is φ = 194418424.

The previous prime is 388836853. The next prime is 388836857. The reversal of 388836856 is 658638883.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×388836856³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388836797 and 388836806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388836853) by changing a digit.

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 as a sum of consecutive naturals, namely, 24302296 + ... + 24302311.

It is an arithmetic number, because the mean of its divisors is an integer number (91133640).

Almost surely, 2^388836856 is an apocalyptic number.

It is an amenable number.

388836856 is a deficient number, since it is larger than the sum of its proper divisors (340232264).

388836856 is a wasteful number, since it uses less digits than its factorization.

388836856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48604613 (or 48604609 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The square root of 388836856 is about 19718.9466250102. The cubic root of 388836856 is about 729.8873010484.

The spelling of 388836856 in words is "three hundred eighty-eight million, eight hundred thirty-six thousand, eight hundred fifty-six".