388283389 has 4 divisors (see below), whose sum is σ = 418151356. Its totient is φ = 358415424.

The previous prime is 388283387. The next prime is 388283393. The reversal of 388283389 is 983382883.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228463225 + 159820164 = 15115^2 + 12642^2 .

It is a cyclic number.

It is not a de Polignac number, because 388283389 - 2¹ = 388283387 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 (388283381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14933964 + ... + 14933989.

It is an arithmetic number, because the mean of its divisors is an integer number (104537839).

Almost surely, 2^388283389 is an apocalyptic number.

It is an amenable number.

388283389 is a deficient number, since it is larger than the sum of its proper divisors (29867967).

388283389 is a wasteful number, since it uses less digits than its factorization.

388283389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29867966.

The product of its digits is 1990656, while the sum is 52.

The square root of 388283389 is about 19704.9077389365. The cubic root of 388283389 is about 729.5408315298.

The spelling of 388283389 in words is "three hundred eighty-eight million, two hundred eighty-three thousand, three hundred eighty-nine".