11123449 has 4 divisors (see below), whose sum is σ = 11132800. Its totient is φ = 11114100.

The previous prime is 11123393. The next prime is 11123471. The reversal of 11123449 is 94432111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94432111 = 1163 ⋅81197.

It is a cyclic number.

It is not a de Polignac number, because 11123449 - 2¹³ = 11115257 is a prime.

It is a super-2 number, since 2×11123449² = 247462235311202, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11123479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2577 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (2783200).

Almost surely, 2^11123449 is an apocalyptic number.

It is an amenable number.

11123449 is a deficient number, since it is larger than the sum of its proper divisors (9351).

11123449 is an equidigital number, since it uses as much as digits as its factorization.

11123449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9350.

The product of its digits is 864, while the sum is 25.

The square root of 11123449 is about 3335.1835031974. The cubic root of 11123449 is about 223.2268800354.

The spelling of 11123449 in words is "eleven million, one hundred twenty-three thousand, four hundred forty-nine".