388893834 has 48 divisors (see below), whose sum is σ = 972541440. Its totient is φ = 110008800.

The previous prime is 388893833. The next prime is 388893847. The reversal of 388893834 is 438398883.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388893833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2554 + ... + 28005.

It is an arithmetic number, because the mean of its divisors is an integer number (20261280).

Almost surely, 2^388893834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388893834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486270720).

388893834 is an abundant number, since it is smaller than the sum of its proper divisors (583647606).

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

388893834 is a wasteful number, since it uses less digits than its factorization.

388893834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30675 (or 30672 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 388893834 is about 19720.3913247177. The cubic root of 388893834 is about 729.9229505218.

The spelling of 388893834 in words is "three hundred eighty-eight million, eight hundred ninety-three thousand, eight hundred thirty-four".