387858609 has 24 divisors (see below), whose sum is σ = 593523840. Its totient is φ = 243386208.

The previous prime is 387858547. The next prime is 387858623. The reversal of 387858609 is 906858783.

It is a happy number.

It is not a de Polignac number, because 387858609 - 2¹³ = 387850417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387858659) 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 23 ways as a sum of consecutive naturals, for example, 19624 + ... + 34070.

It is an arithmetic number, because the mean of its divisors is an integer number (24730160).

Almost surely, 2^387858609 is an apocalyptic number.

It is an amenable number.

387858609 is a deficient number, since it is larger than the sum of its proper divisors (205665231).

387858609 is a wasteful number, since it uses less digits than its factorization.

387858609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14629 (or 14626 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 387858609 is about 19694.1262563232. The cubic root of 387858609 is about 729.2746965027.

The spelling of 387858609 in words is "three hundred eighty-seven million, eight hundred fifty-eight thousand, six hundred nine".