10020009 has 8 divisors (see below), whose sum is σ = 13521312. Its totient is φ = 6599360.

The previous prime is 10019983. The next prime is 10020013. The reversal of 10020009 is 90002001.

It is a happy number.

10020009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10020009 - 2⁹ = 10019497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10019976 and 10020003.

It is not an unprimeable number, because it can be changed into a prime (10020079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19872 + ... + 20369.

It is an arithmetic number, because the mean of its divisors is an integer number (1690164).

Almost surely, 2^10020009 is an apocalyptic number.

It is an amenable number.

10020009 is a deficient number, since it is larger than the sum of its proper divisors (3501303).

10020009 is an equidigital number, since it uses as much as digits as its factorization.

10020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40327.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 10020009 is about 3165.4397798726. The cubic root of 10020009 is about 215.5870668831.

The spelling of 10020009 in words is "ten million, twenty thousand, nine".