6439948 has 12 divisors (see below), whose sum is σ = 11311720. Its totient is φ = 3208032.

The previous prime is 6439933. The next prime is 6439949. The reversal of 6439948 is 8499346.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6439949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713 + ... + 3976.

Almost surely, 2^6439948 is an apocalyptic number.

It is an amenable number.

6439948 is a deficient number, since it is larger than the sum of its proper divisors (4871772).

6439948 is a wasteful number, since it uses less digits than its factorization.

6439948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5976 (or 5974 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 6439948 is about 2537.7052626339. The cubic root of 6439948 is about 186.0490486132.

The spelling of 6439948 in words is "six million, four hundred thirty-nine thousand, nine hundred forty-eight".