388347 has 4 divisors (see below), whose sum is σ = 517800. Its totient is φ = 258896.

The previous prime is 388319. The next prime is 388351. The reversal of 388347 is 743883.

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 388347 - 2¹¹ = 386299 is a prime.

It is a D-number.

388347 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (381347) 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, 64722 + ... + 64727.

It is an arithmetic number, because the mean of its divisors is an integer number (129450).

2³⁸⁸³⁴⁷ is an apocalyptic number.

388347 is a deficient number, since it is larger than the sum of its proper divisors (129453).

388347 is a wasteful number, since it uses less digits than its factorization.

388347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129452.

The product of its digits is 16128, while the sum is 33.

The square root of 388347 is about 623.1749353111. The cubic root of 388347 is about 72.9580668660.

It can be divided in two parts, 38 and 8347, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 388347 in words is "three hundred eighty-eight thousand, three hundred forty-seven".