388609 has 8 divisors (see below), whose sum is σ = 423360. Its totient is φ = 354576.

The previous prime is 388573. The next prime is 388621. The reversal of 388609 is 906883.

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

It is a cyclic number.

It is not a de Polignac number, because 388609 - 2⁷ = 388481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388699) 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, 2082 + ... + 2260.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2³⁸⁸⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

388609 is a deficient number, since it is larger than the sum of its proper divisors (34751).

388609 is a wasteful number, since it uses less digits than its factorization.

388609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

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

The square root of 388609 is about 623.3851137138. The cubic root of 388609 is about 72.9744703372.

The spelling of 388609 in words is "three hundred eighty-eight thousand, six hundred nine".