6449994 has 24 divisors (see below), whose sum is σ = 14240772. Its totient is φ = 2109120.

The previous prime is 6449923. The next prime is 6450007. The reversal of 6449994 is 4999446.

It can be written as a sum of positive squares in 2 ways, for example, as 5978025 + 471969 = 2445^2 + 687^2 .

It is an Ulam number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2427 + ... + 4334.

Almost surely, 2^6449994 is an apocalyptic number.

6449994 is an abundant number, since it is smaller than the sum of its proper divisors (7790778).

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

6449994 is a wasteful number, since it uses less digits than its factorization.

6449994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822 (or 6819 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 6449994 is about 2539.6838385909. The cubic root of 6449994 is about 186.1457407867.

The spelling of 6449994 in words is "six million, four hundred forty-nine thousand, nine hundred ninety-four".