387338489 has 8 divisors (see below), whose sum is σ = 410560488. Its totient is φ = 364165120.

The previous prime is 387338477. The next prime is 387338509. The reversal of 387338489 is 984833783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 194128489 + 193210000 = 13933^2 + 13900^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387338489 - 2²⁴ = 370561273 is a prime.

It is a super-2 number, since 2×387338489² = 300062210121606242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 387338489.

It is not an unprimeable number, because it can be changed into a prime (387338429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4949 + ... + 28269.

It is an arithmetic number, because the mean of its divisors is an integer number (51320061).

Almost surely, 2^387338489 is an apocalyptic number.

It is an amenable number.

387338489 is a deficient number, since it is larger than the sum of its proper divisors (23221999).

387338489 is a wasteful number, since it uses less digits than its factorization.

387338489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24315.

The product of its digits is 3483648, while the sum is 53.

The square root of 387338489 is about 19680.9168739670. The cubic root of 387338489 is about 728.9485638820.

The spelling of 387338489 in words is "three hundred eighty-seven million, three hundred thirty-eight thousand, four hundred eighty-nine".