388947 has 8 divisors (see below), whose sum is σ = 558544. Its totient is φ = 239328.

The previous prime is 388937. The next prime is 388961. The reversal of 388947 is 749883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388947 - 2⁴ = 388931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 9973 = 388947 / (3 + 8 + 8 + 9 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388937) 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 7 ways as a sum of consecutive naturals, for example, 4948 + ... + 5025.

It is an arithmetic number, because the mean of its divisors is an integer number (69818).

2³⁸⁸⁹⁴⁷ is an apocalyptic number.

388947 is a deficient number, since it is larger than the sum of its proper divisors (169597).

388947 is a wasteful number, since it uses less digits than its factorization.

388947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989.

The product of its digits is 48384, while the sum is 39.

The square root of 388947 is about 623.6561552651. The cubic root of 388947 is about 72.9956211798.

The spelling of 388947 in words is "three hundred eighty-eight thousand, nine hundred forty-seven".