388487 has 4 divisors (see below), whose sum is σ = 423816. Its totient is φ = 353160.

The previous prime is 388483. The next prime is 388489. The reversal of 388487 is 784883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784883 = 11 ⋅71353.

It is a cyclic number.

It is not a de Polignac number, because 388487 - 2² = 388483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 388487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388481) 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, 17648 + ... + 17669.

It is an arithmetic number, because the mean of its divisors is an integer number (105954).

2³⁸⁸⁴⁸⁷ is an apocalyptic number.

388487 is a deficient number, since it is larger than the sum of its proper divisors (35329).

388487 is a wasteful number, since it uses less digits than its factorization.

388487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35328.

The product of its digits is 43008, while the sum is 38.

The square root of 388487 is about 623.2872531987. The cubic root of 388487 is about 72.9668329972.

The spelling of 388487 in words is "three hundred eighty-eight thousand, four hundred eighty-seven".