387906 has 16 divisors (see below), whose sum is σ = 821664. Its totient is φ = 121664.

The previous prime is 387857. The next prime is 387911. The reversal of 387906 is 609783.

It is a happy number.

It is an unprimeable number.

387906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (51354).

2³⁸⁷⁹⁰⁶ is an apocalyptic number.

387906 is an abundant number, since it is smaller than the sum of its proper divisors (433758).

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

387906 is a wasteful number, since it uses less digits than its factorization.

387906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 387906 is about 622.8210015727. The cubic root of 387906 is about 72.9304397747.

The spelling of 387906 in words is "three hundred eighty-seven thousand, nine hundred six".