388667 has 4 divisors (see below), whose sum is σ = 394536. Its totient is φ = 382800.

The previous prime is 388657. The next prime is 388673. The reversal of 388667 is 766883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766883 = 13 ⋅58991.

It is a cyclic number.

It is not a de Polignac number, because 388667 - 2⁴ = 388651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388667.

It is not an unprimeable number, because it can be changed into a prime (388657) 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 3 ways as a sum of consecutive naturals, for example, 2834 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (98634).

2³⁸⁸⁶⁶⁷ is an apocalyptic number.

388667 is a deficient number, since it is larger than the sum of its proper divisors (5869).

388667 is an equidigital number, since it uses as much as digits as its factorization.

388667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its digits is 48384, while the sum is 38.

The square root of 388667 is about 623.4316321779. The cubic root of 388667 is about 72.9781006432.

The spelling of 388667 in words is "three hundred eighty-eight thousand, six hundred sixty-seven".