388909696 has 64 divisors (see below), whose sum is σ = 888428160. Its totient is φ = 166118400.

The previous prime is 388909693. The next prime is 388909721. The reversal of 388909696 is 696909883.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 388909696.

It is not an unprimeable number, because it can be changed into a prime (388909693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376701 + ... + 377731.

It is an arithmetic number, because the mean of its divisors is an integer number (13881690).

Almost surely, 2^388909696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444214080).

388909696 is an abundant number, since it is smaller than the sum of its proper divisors (499518464).

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

388909696 is a wasteful number, since it uses less digits than its factorization.

388909696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 388909696 is about 19720.7934931635. The cubic root of 388909696 is about 729.9328742932.

The spelling of 388909696 in words is "three hundred eighty-eight million, nine hundred nine thousand, six hundred ninety-six".