387912 has 32 divisors (see below), whose sum is σ = 1108800. Its totient is φ = 110784.

The previous prime is 387911. The next prime is 387913. The reversal of 387912 is 219783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (387911) and next prime (387913).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 387912.

It is not an unprimeable number, because it can be changed into a prime (387911) 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, 987 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (34650).

2³⁸⁷⁹¹² is an apocalyptic number.

It is an amenable number.

387912 is an abundant number, since it is smaller than the sum of its proper divisors (720888).

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

387912 is a wasteful number, since it uses less digits than its factorization.

387912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2321 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 387912 is about 622.8258183473. The cubic root of 387912 is about 72.9308157939.

The spelling of 387912 in words is "three hundred eighty-seven thousand, nine hundred twelve".