6394989 has 8 divisors (see below), whose sum is σ = 8897472. Its totient is φ = 4077920.

The previous prime is 6394981. The next prime is 6395047. The reversal of 6394989 is 9894936.

It is a happy number.

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 6394989 - 2³ = 6394981 is a prime.

It is a Curzon number.

6394989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6394981) 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, 46272 + ... + 46409.

It is an arithmetic number, because the mean of its divisors is an integer number (1112184).

Almost surely, 2^6394989 is an apocalyptic number.

6394989 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6394989 is a deficient number, since it is larger than the sum of its proper divisors (2502483).

6394989 is a wasteful number, since it uses less digits than its factorization.

6394989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92707.

The product of its digits is 419904, while the sum is 48.

The square root of 6394989 is about 2528.8315483638. The cubic root of 6394989 is about 185.6150844390.

The spelling of 6394989 in words is "six million, three hundred ninety-four thousand, nine hundred eighty-nine".