9930409 has 4 divisors (see below), whose sum is σ = 10066516. Its totient is φ = 9794304.

The previous prime is 9930391. The next prime is 9930419. The reversal of 9930409 is 9040399.

9930409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 7856809 = 1440^2 + 2803^2 .

It is a cyclic number.

It is not a de Polignac number, because 9930409 - 2¹¹ = 9928361 is a prime.

It is a super-2 number, since 2×9930409² = 197226045814562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9930419) 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, 67944 + ... + 68089.

It is an arithmetic number, because the mean of its divisors is an integer number (2516629).

Almost surely, 2^9930409 is an apocalyptic number.

It is an amenable number.

9930409 is a deficient number, since it is larger than the sum of its proper divisors (136107).

9930409 is a wasteful number, since it uses less digits than its factorization.

9930409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136106.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 9930409 is about 3151.2551467630. The cubic root of 9930409 is about 214.9425409821.

The spelling of 9930409 in words is "nine million, nine hundred thirty thousand, four hundred nine".