6489942 has 8 divisors (see below), whose sum is σ = 12979896. Its totient is φ = 2163312.

The previous prime is 6489913. The next prime is 6489949. The reversal of 6489942 is 2499846.

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

6489942 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6489894 and 6489903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489949) 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 3 ways as a sum of consecutive naturals, for example, 540823 + ... + 540834.

It is an arithmetic number, because the mean of its divisors is an integer number (1622487).

Almost surely, 2^6489942 is an apocalyptic number.

6489942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6489942 is a wasteful number, since it uses less digits than its factorization.

6489942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081662.

The product of its digits is 124416, while the sum is 42.

The square root of 6489942 is about 2547.5364570502. The cubic root of 6489942 is about 186.5292476418.

The spelling of 6489942 in words is "six million, four hundred eighty-nine thousand, nine hundred forty-two".