6321389 has 4 divisors (see below), whose sum is σ = 6596256. Its totient is φ = 6046524.

The previous prime is 6321379. The next prime is 6321401. The reversal of 6321389 is 9831236.

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 6321389 - 2⁴ = 6321373 is a prime.

It is a super-3 number, since 3×6321389³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6321379) 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, 137399 + ... + 137444.

It is an arithmetic number, because the mean of its divisors is an integer number (1649064).

Almost surely, 2^6321389 is an apocalyptic number.

It is an amenable number.

6321389 is a deficient number, since it is larger than the sum of its proper divisors (274867).

6321389 is a wasteful number, since it uses less digits than its factorization.

6321389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274866.

The product of its digits is 7776, while the sum is 32.

The square root of 6321389 is about 2514.2372600851. The cubic root of 6321389 is about 184.9002530221.

The spelling of 6321389 in words is "six million, three hundred twenty-one thousand, three hundred eighty-nine".