388957689 has 12 divisors (see below), whose sum is σ = 562010176. Its totient is φ = 259220952.

The previous prime is 388957643. The next prime is 388957691. The reversal of 388957689 is 986759883.

It is not a de Polignac number, because 388957689 - 2¹³ = 388949497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388953689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36372 + ... + 45834.

Almost surely, 2^388957689 is an apocalyptic number.

It is an amenable number.

388957689 is a deficient number, since it is larger than the sum of its proper divisors (173052487).

388957689 is a wasteful number, since it uses less digits than its factorization.

388957689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14036 (or 14033 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 388957689 is about 19722.0102677187. The cubic root of 388957689 is about 729.9628985960.

The spelling of 388957689 in words is "three hundred eighty-eight million, nine hundred fifty-seven thousand, six hundred eighty-nine".