387447 has 16 divisors (see below), whose sum is σ = 559872. Its totient is φ = 237440.

The previous prime is 387437. The next prime is 387449. The reversal of 387447 is 744783.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 387447 - 2¹⁶ = 321911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3568 + ... + 3674.

It is an arithmetic number, because the mean of its divisors is an integer number (34992).

2³⁸⁷⁴⁴⁷ is an apocalyptic number.

387447 is a deficient number, since it is larger than the sum of its proper divisors (172425).

387447 is a wasteful number, since it uses less digits than its factorization.

387447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its digits is 18816, while the sum is 33.

The square root of 387447 is about 622.4524078193. The cubic root of 387447 is about 72.9016627995.

The spelling of 387447 in words is "three hundred eighty-seven thousand, four hundred forty-seven".