133320009 has 4 divisors (see below), whose sum is σ = 177760016. Its totient is φ = 88880004.

The previous prime is 133319993. The next prime is 133320049. The reversal of 133320009 is 900023331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133320009 - 2⁴ = 133319993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133320049) 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, 22219999 + ... + 22220004.

It is an arithmetic number, because the mean of its divisors is an integer number (44440004).

Almost surely, 2^133320009 is an apocalyptic number.

It is an amenable number.

133320009 is a deficient number, since it is larger than the sum of its proper divisors (44440007).

133320009 is an equidigital number, since it uses as much as digits as its factorization.

133320009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44440006.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 133320009 is about 11546.4284088198. The cubic root of 133320009 is about 510.8559367583.

The spelling of 133320009 in words is "one hundred thirty-three million, three hundred twenty thousand, nine".