111449 has 4 divisors (see below), whose sum is σ = 120036. Its totient is φ = 102864.

The previous prime is 111443. The next prime is 111467. The reversal of 111449 is 944111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944111 = 7 ⋅134873.

It can be written as a sum of positive squares in 2 ways, for example, as 25600 + 85849 = 160^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111449 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111449.

It is not an unprimeable number, because it can be changed into a prime (111443) 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, 4274 + ... + 4299.

It is an arithmetic number, because the mean of its divisors is an integer number (30009).

2¹¹¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

111449 is a deficient number, since it is larger than the sum of its proper divisors (8587).

111449 is an equidigital number, since it uses as much as digits as its factorization.

111449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586.

The product of its digits is 144, while the sum is 20.

The square root of 111449 is about 333.8397819314. The cubic root of 111449 is about 48.1236683727.

The spelling of 111449 in words is "one hundred eleven thousand, four hundred forty-nine".