388807 has 4 divisors (see below), whose sum is σ = 411696. Its totient is φ = 365920.

The previous prime is 388793. The next prime is 388813. The reversal of 388807 is 708883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 388807 - 2¹⁵ = 356039 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11419 + ... + 11452.

It is an arithmetic number, because the mean of its divisors is an integer number (102924).

2³⁸⁸⁸⁰⁷ is an apocalyptic number.

388807 is a deficient number, since it is larger than the sum of its proper divisors (22889).

388807 is a wasteful number, since it uses less digits than its factorization.

388807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 388807 is about 623.5439038271. The cubic root of 388807 is about 72.9868619629.

The spelling of 388807 in words is "three hundred eighty-eight thousand, eight hundred seven".