6489947 has 4 divisors (see below), whose sum is σ = 6640920. Its totient is φ = 6338976.

The previous prime is 6489913. The next prime is 6489949. The reversal of 6489947 is 7499846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6489947 - 2⁶ = 6489883 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 4⁵ + 8³ + 9⁶ + 9⁷ + 4¹⁰ + 7⁶ .

It is not an unprimeable number, because it can be changed into a prime (6489949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75422 + ... + 75507.

It is an arithmetic number, because the mean of its divisors is an integer number (1660230).

Almost surely, 2^6489947 is an apocalyptic number.

6489947 is a deficient number, since it is larger than the sum of its proper divisors (150973).

6489947 is a wasteful number, since it uses less digits than its factorization.

6489947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150972.

The product of its digits is 435456, while the sum is 47.

The square root of 6489947 is about 2547.5374383903. The cubic root of 6489947 is about 186.5292955439.

It can be divided in two parts, 64899 and 47, that added together give a palindrome (64946).

The spelling of 6489947 in words is "six million, four hundred eighty-nine thousand, nine hundred forty-seven".