388271389 has 8 divisors (see below), whose sum is σ = 430748640. Its totient is φ = 346990800.

The previous prime is 388271383. The next prime is 388271393. The reversal of 388271389 is 983172883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-388271389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388271383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298482 + ... + 299779.

It is an arithmetic number, because the mean of its divisors is an integer number (53843580).

Almost surely, 2^388271389 is an apocalyptic number.

It is an amenable number.

388271389 is a deficient number, since it is larger than the sum of its proper divisors (42477251).

388271389 is a wasteful number, since it uses less digits than its factorization.

388271389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598331.

The product of its digits is 580608, while the sum is 49.

The square root of 388271389 is about 19704.6032439123. The cubic root of 388271389 is about 729.5333159021.

The spelling of 388271389 in words is "three hundred eighty-eight million, two hundred seventy-one thousand, three hundred eighty-nine".