6387389 has 4 divisors (see below), whose sum is σ = 6416256. Its totient is φ = 6358524.

The previous prime is 6387383. The next prime is 6387413. The reversal of 6387389 is 9837836.

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.

It is a cyclic number.

It is not a de Polignac number, because 6387389 - 2¹⁶ = 6321853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6387383) 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, 14099 + ... + 14544.

It is an arithmetic number, because the mean of its divisors is an integer number (1604064).

Almost surely, 2^6387389 is an apocalyptic number.

It is an amenable number.

6387389 is a deficient number, since it is larger than the sum of its proper divisors (28867).

6387389 is a wasteful number, since it uses less digits than its factorization.

6387389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28866.

The product of its digits is 217728, while the sum is 44.

The square root of 6387389 is about 2527.3284313678. The cubic root of 6387389 is about 185.5415250818.

It can be divided in two parts, 6387 and 389, that added together give a palindrome (6776).

The spelling of 6387389 in words is "six million, three hundred eighty-seven thousand, three hundred eighty-nine".