6459389 has 4 divisors (see below), whose sum is σ = 6740256. Its totient is φ = 6178524.

The previous prime is 6459361. The next prime is 6459391. The reversal of 6459389 is 9839546.

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: 9839546 = 2 ⋅4919773.

It is a cyclic number.

It is not a de Polignac number, because 6459389 - 2²⁰ = 5410813 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6459319) 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, 140399 + ... + 140444.

It is an arithmetic number, because the mean of its divisors is an integer number (1685064).

Almost surely, 2^6459389 is an apocalyptic number.

It is an amenable number.

6459389 is a deficient number, since it is larger than the sum of its proper divisors (280867).

6459389 is a wasteful number, since it uses less digits than its factorization.

6459389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280866.

The product of its digits is 233280, while the sum is 44.

The square root of 6459389 is about 2541.5328052181. The cubic root of 6459389 is about 186.2360763130.

The spelling of 6459389 in words is "six million, four hundred fifty-nine thousand, three hundred eighty-nine".