2001344209 has 4 divisors (see below), whose sum is σ = 2026677760. Its totient is φ = 1976010660.

The previous prime is 2001344197. The next prime is 2001344231. The reversal of 2001344209 is 9024431002.

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 2001344209 - 2¹³ = 2001336017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001344239) 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, 12666657 + ... + 12666814.

It is an arithmetic number, because the mean of its divisors is an integer number (506669440).

Almost surely, 2^2001344209 is an apocalyptic number.

It is an amenable number.

2001344209 is a deficient number, since it is larger than the sum of its proper divisors (25333551).

2001344209 is an equidigital number, since it uses as much as digits as its factorization.

2001344209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25333550.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2001344209 is about 44736.3857391274. The cubic root of 2001344209 is about 1260.2032528834.

The spelling of 2001344209 in words is "two billion, one million, three hundred forty-four thousand, two hundred nine".