6397489 has 12 divisors (see below), whose sum is σ = 7504164. Its totient is φ = 5437824.

The previous prime is 6397463. The next prime is 6397493. The reversal of 6397489 is 9847936.

It can be written as a sum of positive squares in 2 ways, for example, as 3211264 + 3186225 = 1792^2 + 1785^2 .

It is not a de Polignac number, because 6397489 - 2¹⁹ = 5873201 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 (6395489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6237 + ... + 7189.

It is an arithmetic number, because the mean of its divisors is an integer number (625347).

Almost surely, 2^6397489 is an apocalyptic number.

It is an amenable number.

6397489 is a deficient number, since it is larger than the sum of its proper divisors (1106675).

6397489 is a wasteful number, since it uses less digits than its factorization.

6397489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1097 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 6397489 is about 2529.3257994968. The cubic root of 6397489 is about 185.6392688567.

It can be divided in two parts, 6397 and 489, that added together give a palindrome (6886).

The spelling of 6397489 in words is "six million, three hundred ninety-seven thousand, four hundred eighty-nine".