9666979 has 4 divisors (see below), whose sum is σ = 11047984. Its totient is φ = 8285976.

The previous prime is 9666941. The next prime is 9666989. The reversal of 9666979 is 9796669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9796669 = 2927 ⋅3347.

It is a cyclic number.

It is not a de Polignac number, because 9666979 - 2⁷ = 9666851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9666929) 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, 690492 + ... + 690505.

It is an arithmetic number, because the mean of its divisors is an integer number (2761996).

Almost surely, 2^9666979 is an apocalyptic number.

9666979 is a deficient number, since it is larger than the sum of its proper divisors (1381005).

9666979 is a wasteful number, since it uses less digits than its factorization.

9666979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381004.

The product of its digits is 1102248, while the sum is 52.

The square root of 9666979 is about 3109.1765790961. The cubic root of 9666979 is about 213.0248451993.

The spelling of 9666979 in words is "nine million, six hundred sixty-six thousand, nine hundred seventy-nine".