388446912 has 126 divisors (see below), whose sum is σ = 1295288748. Its totient is φ = 110976768.

The previous prime is 388446901. The next prime is 388446953. The reversal of 388446912 is 219644883.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (126).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21343 + ... + 35105.

Almost surely, 2^388446912 is an apocalyptic number.

388446912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388446912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647644374).

388446912 is an abundant number, since it is smaller than the sum of its proper divisors (906841836).

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

388446912 is a wasteful number, since it uses less digits than its factorization.

388446912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795 (or 13775 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 388446912 is about 19709.0565984270. The cubic root of 388446912 is about 729.6432309333.

The spelling of 388446912 in words is "three hundred eighty-eight million, four hundred forty-six thousand, nine hundred twelve".