11944238209 has 8 divisors (see below), whose sum is σ = 11981340000. Its totient is φ = 11907182976.

The previous prime is 11944238191. The next prime is 11944238219. The reversal of 11944238209 is 90283244911.

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 11944238209 - 2⁵ = 11944238177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11944238219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542514 + ... + 564100.

It is an arithmetic number, because the mean of its divisors is an integer number (1497667500).

Almost surely, 2^11944238209 is an apocalyptic number.

It is an amenable number.

11944238209 is a deficient number, since it is larger than the sum of its proper divisors (37101791).

11944238209 is a wasteful number, since it uses less digits than its factorization.

11944238209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23279.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 11944238209 in words is "eleven billion, nine hundred forty-four million, two hundred thirty-eight thousand, two hundred nine".