387109389 has 16 divisors (see below), whose sum is σ = 539074944. Its totient is φ = 246628800.

The previous prime is 387109379. The next prime is 387109399. The reversal of 387109389 is 983901783.

It is an interprime number because it is at equal distance from previous prime (387109379) and next prime (387109399).

It is not a de Polignac number, because 387109389 - 2²⁰ = 386060813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387109309) 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 15 ways as a sum of consecutive naturals, for example, 110119 + ... + 113579.

It is an arithmetic number, because the mean of its divisors is an integer number (33692184).

Almost surely, 2^387109389 is an apocalyptic number.

It is an amenable number.

387109389 is a deficient number, since it is larger than the sum of its proper divisors (151965555).

387109389 is a wasteful number, since it uses less digits than its factorization.

387109389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 387109389 is about 19675.0956541512. The cubic root of 387109389 is about 728.8048179016.

The spelling of 387109389 in words is "three hundred eighty-seven million, one hundred nine thousand, three hundred eighty-nine".