9669979 has 4 divisors (see below), whose sum is σ = 10549080. Its totient is φ = 8790880.

The previous prime is 9669953. The next prime is 9669997. The reversal of 9669979 is 9799669.

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 9669979 - 2⁷ = 9669851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9669929) 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, 439534 + ... + 439555.

It is an arithmetic number, because the mean of its divisors is an integer number (2637270).

Almost surely, 2^9669979 is an apocalyptic number.

9669979 is a deficient number, since it is larger than the sum of its proper divisors (879101).

9669979 is a wasteful number, since it uses less digits than its factorization.

9669979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879100.

The product of its digits is 1653372, while the sum is 55.

The square root of 9669979 is about 3109.6589845190. The cubic root of 9669979 is about 213.0468792611.

It can be divided in two parts, 9669 and 979, that added together give a cube (10648 = 22³).

The spelling of 9669979 in words is "nine million, six hundred sixty-nine thousand, nine hundred seventy-nine".