6449986 has 8 divisors (see below), whose sum is σ = 9692604. Its totient is φ = 3219120.

The previous prime is 6449923. The next prime is 6450007. The reversal of 6449986 is 6899446.

It can be written as a sum of positive squares in 2 ways, for example, as 6095961 + 354025 = 2469^2 + 595^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405 + ... + 3856.

Almost surely, 2^6449986 is an apocalyptic number.

6449986 is a deficient number, since it is larger than the sum of its proper divisors (3242618).

6449986 is a wasteful number, since it uses less digits than its factorization.

6449986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876.

The product of its digits is 373248, while the sum is 46.

The square root of 6449986 is about 2539.6822635913. The cubic root of 6449986 is about 186.1456638272.

The spelling of 6449986 in words is "six million, four hundred forty-nine thousand, nine hundred eighty-six".