387109 has 2 divisors, whose sum is σ = 387110. Its totient is φ = 387108.

The previous prime is 387089. The next prime is 387137. The reversal of 387109 is 901783.

It is an a-pointer prime, because the next prime (387137) can be obtained adding 387109 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386884 + 225 = 622^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 387109 - 2⁵ = 387077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193554 + 193555.

It is an arithmetic number, because the mean of its divisors is an integer number (193555).

2³⁸⁷¹⁰⁹ is an apocalyptic number.

It is an amenable number.

387109 is a deficient number, since it is larger than the sum of its proper divisors (1).

387109 is an equidigital number, since it uses as much as digits as its factorization.

387109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 387109 is about 622.1808418780. The cubic root of 387109 is about 72.8804573780.

It can be divided in two parts, 387 and 109, that added together give a triangular number (496 = T₃₁).

The spelling of 387109 in words is "three hundred eighty-seven thousand, one hundred nine".