388906 has 8 divisors (see below), whose sum is σ = 666720. Its totient is φ = 166668.

The previous prime is 388903. The next prime is 388931. The reversal of 388906 is 609883.

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

It is a nialpdrome in base 5.

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 3 ways as a sum of consecutive naturals, for example, 13876 + ... + 13903.

It is an arithmetic number, because the mean of its divisors is an integer number (83340).

2³⁸⁸⁹⁰⁶ is an apocalyptic number.

388906 is a deficient number, since it is larger than the sum of its proper divisors (277814).

388906 is a wasteful number, since it uses less digits than its factorization.

388906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27788.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 388906 is about 623.6232837218. The cubic root of 388906 is about 72.9930561982.

The spelling of 388906 in words is "three hundred eighty-eight thousand, nine hundred six".