11406880809 has 15 divisors (see below), whose sum is σ = 17041344397. Its totient is φ = 7603946388.

The previous prime is 11406880801. The next prime is 11406880819. The reversal of 11406880809 is 90808860411.

The square root of 11406880809 is 106803.

It is a perfect power (a square), and thus also a powerful number.

11406880809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11406880809 - 2³ = 11406880801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11406880801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 955294 + ... + 967160.

Almost surely, 2^11406880809 is an apocalyptic number.

11406880809 is the 106803-rd square number.

11406880809 is the 53402-nd centered octagonal number.

It is an amenable number.

11406880809 is a deficient number, since it is larger than the sum of its proper divisors (5634463588).

11406880809 is an frugal number, since it uses more digits than its factorization.

11406880809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23746 (or 11870 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 11406880809 in words is "eleven billion, four hundred six million, eight hundred eighty thousand, eight hundred nine".