7986449 has 4 divisors (see below), whose sum is σ = 8006964. Its totient is φ = 7965936.

The previous prime is 7986439. The next prime is 7986457. The reversal of 7986449 is 9446897.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3441025 + 4545424 = 1855^2 + 2132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7986449 is a prime.

It is a d-powerful number, because it can be written as 7⁷ + 9⁵ + 8⁷ + 6⁷ + 4⁵ + 4¹¹ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7986439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9662 + ... + 10455.

It is an arithmetic number, because the mean of its divisors is an integer number (2001741).

Almost surely, 2^7986449 is an apocalyptic number.

It is an amenable number.

7986449 is a deficient number, since it is larger than the sum of its proper divisors (20515).

7986449 is a wasteful number, since it uses less digits than its factorization.

7986449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20514.

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

The square root of 7986449 is about 2826.0306084684. The cubic root of 7986449 is about 199.8870111797.

The spelling of 7986449 in words is "seven million, nine hundred eighty-six thousand, four hundred forty-nine".