9947967 has 4 divisors (see below), whose sum is σ = 13263960. Its totient is φ = 6631976.

The previous prime is 9947947. The next prime is 9947969. The reversal of 9947967 is 7697499.

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 9947967 - 2¹⁰ = 9946943 is a prime.

9947967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657992 + ... + 1657997.

It is an arithmetic number, because the mean of its divisors is an integer number (3315990).

Almost surely, 2^9947967 is an apocalyptic number.

9947967 is a deficient number, since it is larger than the sum of its proper divisors (3315993).

9947967 is a wasteful number, since it uses less digits than its factorization.

9947967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315992.

The product of its digits is 857304, while the sum is 51.

The square root of 9947967 is about 3154.0397904909. The cubic root of 9947967 is about 215.0691466793.

The spelling of 9947967 in words is "nine million, nine hundred forty-seven thousand, nine hundred sixty-seven".