6864389 has 8 divisors (see below), whose sum is σ = 7944960. Its totient is φ = 5808816.

The previous prime is 6864383. The next prime is 6864427. The reversal of 6864389 is 9834686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6864389 - 2¹⁶ = 6798853 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 (6864383) 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 7 ways as a sum of consecutive naturals, for example, 5654 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (993120).

Almost surely, 2^6864389 is an apocalyptic number.

It is an amenable number.

6864389 is a deficient number, since it is larger than the sum of its proper divisors (1080571).

6864389 is a wasteful number, since it uses less digits than its factorization.

6864389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12499.

The product of its digits is 248832, while the sum is 44.

The square root of 6864389 is about 2619.9979007625. The cubic root of 6864389 is about 190.0497469000.

The spelling of 6864389 in words is "six million, eight hundred sixty-four thousand, three hundred eighty-nine".