11405443399 has 24 divisors (see below), whose sum is σ = 14065761408. Its totient is φ = 9204995520.

The previous prime is 11405443373. The next prime is 11405443417. The reversal of 11405443399 is 99334450411.

It is not a de Polignac number, because 11405443399 - 2⁷ = 11405443271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405443369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45264 + ... + 157669.

It is an arithmetic number, because the mean of its divisors is an integer number (586073392).

Almost surely, 2^11405443399 is an apocalyptic number.

11405443399 is a deficient number, since it is larger than the sum of its proper divisors (2660318009).

11405443399 is a wasteful number, since it uses less digits than its factorization.

11405443399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203015 (or 203008 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 11405443399 in words is "eleven billion, four hundred five million, four hundred forty-three thousand, three hundred ninety-nine".