6464389 has 8 divisors (see below), whose sum is σ = 6832640. Its totient is φ = 6098976.

The previous prime is 6464387. The next prime is 6464401. The reversal of 6464389 is 9834646.

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 6464389 - 2¹ = 6464387 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 (6464387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5404 + ... + 6490.

It is an arithmetic number, because the mean of its divisors is an integer number (854080).

Almost surely, 2^6464389 is an apocalyptic number.

It is an amenable number.

6464389 is a deficient number, since it is larger than the sum of its proper divisors (368251).

6464389 is a wasteful number, since it uses less digits than its factorization.

6464389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its digits is 124416, while the sum is 40.

The square root of 6464389 is about 2542.5162733009. The cubic root of 6464389 is about 186.2841169878.

The spelling of 6464389 in words is "six million, four hundred sixty-four thousand, three hundred eighty-nine".