388277946 has 48 divisors (see below), whose sum is σ = 965188224. Its totient is φ = 110505312.

The previous prime is 388277891. The next prime is 388277959. The reversal of 388277946 is 649772883.

It is a junction number, because it is equal to n+sod(n) for n = 388277892 and 388277901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27280 + ... + 38996.

It is an arithmetic number, because the mean of its divisors is an integer number (20108088).

Almost surely, 2^388277946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388277946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482594112).

388277946 is an abundant number, since it is smaller than the sum of its proper divisors (576910278).

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

388277946 is a wasteful number, since it uses less digits than its factorization.

388277946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11995 (or 11992 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 388277946 is about 19704.7696256516. The cubic root of 388277946 is about 729.5374225855.

The spelling of 388277946 in words is "three hundred eighty-eight million, two hundred seventy-seven thousand, nine hundred forty-six".