387609 has 8 divisors (see below), whose sum is σ = 528000. Its totient is φ = 252816.

The previous prime is 387587. The next prime is 387613. The reversal of 387609 is 906783.

It is a happy number.

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

It is not a de Polignac number, because 387609 - 2⁵ = 387577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387609.

It is not an unprimeable number, because it can be changed into a prime (387659) 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, 1234 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (66000).

2³⁸⁷⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

387609 is a deficient number, since it is larger than the sum of its proper divisors (140391).

387609 is a wasteful number, since it uses less digits than its factorization.

387609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799.

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

The square root of 387609 is about 622.5825246503. The cubic root of 387609 is about 72.9118219729.

The spelling of 387609 in words is "three hundred eighty-seven thousand, six hundred nine".