387655389 has 40 divisors (see below), whose sum is σ = 645245568. Its totient is φ = 229919040.

The previous prime is 387655351. The next prime is 387655393. The reversal of 387655389 is 983556783.

It is a happy number.

387655389 is a `hidden beast` number, since 3 + 8 + 7 + 6 + 553 + 89 = 666.

It is not a de Polignac number, because 387655389 - 2¹⁵ = 387622621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387655399) 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 39 ways as a sum of consecutive naturals, for example, 37249 + ... + 46505.

Almost surely, 2^387655389 is an apocalyptic number.

It is an amenable number.

387655389 is a deficient number, since it is larger than the sum of its proper divisors (257590179).

387655389 is a wasteful number, since it uses less digits than its factorization.

387655389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9327 (or 9318 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 387655389 is about 19688.9661739767. The cubic root of 387655389 is about 729.1473054966.

The spelling of 387655389 in words is "three hundred eighty-seven million, six hundred fifty-five thousand, three hundred eighty-nine".