11105449389 has 6 divisors (see below), whose sum is σ = 16041204686. Its totient is φ = 7403632920.

The previous prime is 11105449387. The next prime is 11105449417. The reversal of 11105449389 is 98394450111.

11105449389 is a `hidden beast` number, since 1 + 1 + 10 + 544 + 93 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9052000164 + 2053449225 = 95142^2 + 45315^2 .

It is not a de Polignac number, because 11105449389 - 2¹ = 11105449387 is a prime.

It is a super-2 number, since 2×11105449389² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11105449387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616969402 + ... + 616969419.

Almost surely, 2^11105449389 is an apocalyptic number.

It is an amenable number.

11105449389 is a deficient number, since it is larger than the sum of its proper divisors (4935755297).

11105449389 is a wasteful number, since it uses less digits than its factorization.

11105449389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233938827 (or 1233938824 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11105449389 in words is "eleven billion, one hundred five million, four hundred forty-nine thousand, three hundred eighty-nine".