387335609 has 4 divisors (see below), whose sum is σ = 387376116. Its totient is φ = 387295104.

The previous prime is 387335603. The next prime is 387335621. The reversal of 387335609 is 906533783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 92698384 + 294637225 = 9628^2 + 17165^2 .

It is a cyclic number.

It is not a de Polignac number, because 387335609 - 2²⁴ = 370558393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387335609.

It is not an unprimeable number, because it can be changed into a prime (387335603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2957 + ... + 27989.

It is an arithmetic number, because the mean of its divisors is an integer number (96844029).

Almost surely, 2^387335609 is an apocalyptic number.

It is an amenable number.

387335609 is a deficient number, since it is larger than the sum of its proper divisors (40507).

387335609 is a wasteful number, since it uses less digits than its factorization.

387335609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40506.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 387335609 is about 19680.8437065081. The cubic root of 387335609 is about 728.9467572132.

The spelling of 387335609 in words is "three hundred eighty-seven million, three hundred thirty-five thousand, six hundred nine".