6456989 has 8 divisors (see below), whose sum is σ = 8050368. Its totient is φ = 5031360.

The previous prime is 6456977. The next prime is 6457007. The reversal of 6456989 is 9896546.

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 6456989 - 2⁸ = 6456733 is a prime.

It is a super-2 number, since 2×6456989² = 83385413892242, which contains 22 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 (6456929) 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, 41852 + ... + 42005.

It is an arithmetic number, because the mean of its divisors is an integer number (1006296).

Almost surely, 2^6456989 is an apocalyptic number.

It is an amenable number.

6456989 is a deficient number, since it is larger than the sum of its proper divisors (1593379).

6456989 is a wasteful number, since it uses less digits than its factorization.

6456989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83875.

The product of its digits is 466560, while the sum is 47.

The square root of 6456989 is about 2541.0606053379. The cubic root of 6456989 is about 186.2130079830.

The spelling of 6456989 in words is "six million, four hundred fifty-six thousand, nine hundred eighty-nine".