387117 has 6 divisors (see below), whose sum is σ = 559182. Its totient is φ = 258072.

The previous prime is 387109. The next prime is 387137. The reversal of 387117 is 711783.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 19881 = 606^2 + 141^2 .

It is not a de Polignac number, because 387117 - 2³ = 387109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21498 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (93197).

2³⁸⁷¹¹⁷ is an apocalyptic number.

It is an amenable number.

387117 is a deficient number, since it is larger than the sum of its proper divisors (172065).

387117 is a wasteful number, since it uses less digits than its factorization.

387117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43019 (or 43016 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 387117 is about 622.1872708438. The cubic root of 387117 is about 72.8809594241.

The spelling of 387117 in words is "three hundred eighty-seven thousand, one hundred seventeen".