9942309 has 12 divisors (see below), whose sum is σ = 15465996. Its totient is φ = 6118272.

The previous prime is 9942299. The next prime is 9942311. The reversal of 9942309 is 9032499.

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 8538084 = 1185^2 + 2922^2 .

It is not a de Polignac number, because 9942309 - 2⁵ = 9942277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942409) 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 11 ways as a sum of consecutive naturals, for example, 42372 + ... + 42605.

It is an arithmetic number, because the mean of its divisors is an integer number (1288833).

Almost surely, 2^9942309 is an apocalyptic number.

It is an amenable number.

9942309 is a deficient number, since it is larger than the sum of its proper divisors (5523687).

9942309 is a wasteful number, since it uses less digits than its factorization.

9942309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84996 (or 84993 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 9942309 is about 3153.1427179879. The cubic root of 9942309 is about 215.0283647452.

The spelling of 9942309 in words is "nine million, nine hundred forty-two thousand, three hundred nine".