388427 has 4 divisors (see below), whose sum is σ = 418320. Its totient is φ = 358536.

The previous prime is 388403. The next prime is 388459. The reversal of 388427 is 724883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724883 = 347 ⋅2089.

It is a cyclic number.

It is not a de Polignac number, because 388427 - 2⁶ = 388363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388393 and 388402.

It is not an unprimeable number, because it can be changed into a prime (388477) 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, 14927 + ... + 14952.

It is an arithmetic number, because the mean of its divisors is an integer number (104580).

2³⁸⁸⁴²⁷ is an apocalyptic number.

388427 is a deficient number, since it is larger than the sum of its proper divisors (29893).

388427 is a wasteful number, since it uses less digits than its factorization.

388427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29892.

The product of its digits is 10752, while the sum is 32.

The square root of 388427 is about 623.2391194397. The cubic root of 388427 is about 72.9630763417.

The spelling of 388427 in words is "three hundred eighty-eight thousand, four hundred twenty-seven".