11944460409 has 16 divisors (see below), whose sum is σ = 19159034880. Its totient is φ = 6466173840.

The previous prime is 11944460383. The next prime is 11944460417. The reversal of 11944460409 is 90406444911.

It is not a de Polignac number, because 11944460409 - 2⁵ = 11944460377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11944460449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14967597 + ... + 14968394.

It is an arithmetic number, because the mean of its divisors is an integer number (1197439680).

Almost surely, 2^11944460409 is an apocalyptic number.

11944460409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11944460409 is a deficient number, since it is larger than the sum of its proper divisors (7214574471).

11944460409 is a wasteful number, since it uses less digits than its factorization.

11944460409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29936020.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 11944460409 in words is "eleven billion, nine hundred forty-four million, four hundred sixty thousand, four hundred nine".