388773009 has 12 divisors (see below), whose sum is σ = 563095936. Its totient is φ = 258473592.

The previous prime is 388773001. The next prime is 388773013. The reversal of 388773009 is 900377883.

It is not a de Polignac number, because 388773009 - 2³ = 388773001 is a prime.

It is a super-2 number, since 2×388773009² = 302288905053828162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388773001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55549 + ... + 62154.

Almost surely, 2^388773009 is an apocalyptic number.

It is an amenable number.

388773009 is a deficient number, since it is larger than the sum of its proper divisors (174322927).

388773009 is a wasteful number, since it uses less digits than its factorization.

388773009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118076 (or 118073 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 388773009 is about 19717.3276333280. The cubic root of 388773009 is about 729.8473497041.

The spelling of 388773009 in words is "three hundred eighty-eight million, seven hundred seventy-three thousand, nine".