11143449 has 24 divisors (see below), whose sum is σ = 17182152. Its totient is φ = 6935040.

The previous prime is 11143427. The next prime is 11143463. The reversal of 11143449 is 94434111.

It can be written as a sum of positive squares in 4 ways, for example, as 1871424 + 9272025 = 1368^2 + 3045^2 .

It is not a de Polignac number, because 11143449 - 2⁵ = 11143417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11143499) 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, 26259 + ... + 26679.

It is an arithmetic number, because the mean of its divisors is an integer number (715923).

Almost surely, 2^11143449 is an apocalyptic number.

It is an amenable number.

11143449 is a deficient number, since it is larger than the sum of its proper divisors (6038703).

11143449 is a wasteful number, since it uses less digits than its factorization.

11143449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 614 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11143449 is about 3338.1804924240. The cubic root of 11143449 is about 223.3605875009.

The spelling of 11143449 in words is "eleven million, one hundred forty-three thousand, four hundred forty-nine".