7996447 has 4 divisors (see below), whose sum is σ = 8132040. Its totient is φ = 7860856.

The previous prime is 7996423. The next prime is 7996463. The reversal of 7996447 is 7446997.

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 7996447 - 2⁷ = 7996319 is a prime.

It is a Duffinian number.

7996447 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7996397 and 7996406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7996487) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 67708 + ... + 67825.

It is an arithmetic number, because the mean of its divisors is an integer number (2033010).

Almost surely, 2^7996447 is an apocalyptic number.

7996447 is a deficient number, since it is larger than the sum of its proper divisors (135593).

7996447 is a wasteful number, since it uses less digits than its factorization.

7996447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135592.

The product of its digits is 381024, while the sum is 46.

The square root of 7996447 is about 2827.7989673950. The cubic root of 7996447 is about 199.9703872823.

The spelling of 7996447 in words is "seven million, nine hundred ninety-six thousand, four hundred forty-seven".