388087 has 4 divisors (see below), whose sum is σ = 443536. Its totient is φ = 332640.

The previous prime is 388081. The next prime is 388099. The reversal of 388087 is 780883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780883 = 29 ⋅26927.

It is not a de Polignac number, because 388087 - 2¹¹ = 386039 is a prime.

It is a super-2 number, since 2×388087² = 301223039138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27714 + ... + 27727.

It is an arithmetic number, because the mean of its divisors is an integer number (110884).

2³⁸⁸⁰⁸⁷ is an apocalyptic number.

388087 is a deficient number, since it is larger than the sum of its proper divisors (55449).

388087 is an equidigital number, since it uses as much as digits as its factorization.

388087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55448.

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

The square root of 388087 is about 622.9662912229. The cubic root of 388087 is about 72.9417813170.

The spelling of 388087 in words is "three hundred eighty-eight thousand, eighty-seven".