387249 has 4 divisors (see below), whose sum is σ = 516336. Its totient is φ = 258164.

The previous prime is 387227. The next prime is 387253. The reversal of 387249 is 942783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942783 = 3 ⋅314261.

It is a cyclic number.

It is not a de Polignac number, because 387249 - 2⁸ = 386993 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (387269) 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, 64539 + ... + 64544.

It is an arithmetic number, because the mean of its divisors is an integer number (129084).

2³⁸⁷²⁴⁹ is an apocalyptic number.

It is an amenable number.

387249 is a deficient number, since it is larger than the sum of its proper divisors (129087).

387249 is a wasteful number, since it uses less digits than its factorization.

387249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129086.

The product of its digits is 12096, while the sum is 33.

The square root of 387249 is about 622.2933391898. The cubic root of 387249 is about 72.8892421856.

It can be divided in two parts, 387 and 249, that added together give a palindrome (636).

The spelling of 387249 in words is "three hundred eighty-seven thousand, two hundred forty-nine".