388911 has 8 divisors (see below), whose sum is σ = 545920. Its totient is φ = 245592.

The previous prime is 388903. The next prime is 388931. The reversal of 388911 is 119883.

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

It is not a de Polignac number, because 388911 - 2³ = 388903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3355 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (68240).

2³⁸⁸⁹¹¹ is an apocalyptic number.

388911 is a deficient number, since it is larger than the sum of its proper divisors (157009).

388911 is a wasteful number, since it uses less digits than its factorization.

388911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845.

The product of its digits is 1728, while the sum is 30.

The square root of 388911 is about 623.6272925394. The cubic root of 388911 is about 72.9933690105.

The spelling of 388911 in words is "three hundred eighty-eight thousand, nine hundred eleven".