388996692 has 72 divisors (see below), whose sum is σ = 1058492736. Its totient is φ = 110863872.

The previous prime is 388996679. The next prime is 388996697. The reversal of 388996692 is 296699883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388996697) 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 in 23 ways as a sum of consecutive naturals, for example, 395233 + ... + 396215.

It is an arithmetic number, because the mean of its divisors is an integer number (14701288).

Almost surely, 2^388996692 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 388996692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529246368).

388996692 is an abundant number, since it is smaller than the sum of its proper divisors (669496044).

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

388996692 is a wasteful number, since it uses less digits than its factorization.

388996692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677 (or 1668 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The square root of 388996692 is about 19722.9990620088. Note that the first 3 decimals coincide. The cubic root of 388996692 is about 729.9872969579.

The spelling of 388996692 in words is "three hundred eighty-eight million, nine hundred ninety-six thousand, six hundred ninety-two".