340120009 has 4 divisors (see below), whose sum is σ = 340472704. Its totient is φ = 339767316.

The previous prime is 340119991. The next prime is 340120013. The reversal of 340120009 is 900021043.

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 a cyclic number.

It is not a de Polignac number, because 340120009 - 2⁷ = 340119881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340120069) 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, 174897 + ... + 176830.

It is an arithmetic number, because the mean of its divisors is an integer number (85118176).

Almost surely, 2^340120009 is an apocalyptic number.

It is an amenable number.

340120009 is a deficient number, since it is larger than the sum of its proper divisors (352695).

340120009 is an equidigital number, since it uses as much as digits as its factorization.

340120009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352694.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 340120009 is about 18442.3428283936. The cubic root of 340120009 is about 698.0353133312.

The spelling of 340120009 in words is "three hundred forty million, one hundred twenty thousand, nine".