111399449 has 4 divisors (see below), whose sum is σ = 127313664. Its totient is φ = 95485236.

The previous prime is 111399439. The next prime is 111399467. The reversal of 111399449 is 944993111.

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 an emirpimes, since its reverse is a distinct semiprime: 944993111 = 23 ⋅41086657.

It is a de Polignac number, because none of the positive numbers 2^k-111399449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111399439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7957097 + ... + 7957110.

It is an arithmetic number, because the mean of its divisors is an integer number (31828416).

Almost surely, 2^111399449 is an apocalyptic number.

It is an amenable number.

111399449 is a deficient number, since it is larger than the sum of its proper divisors (15914215).

111399449 is an equidigital number, since it uses as much as digits as its factorization.

111399449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15914214.

The product of its digits is 34992, while the sum is 41.

The square root of 111399449 is about 10554.5937392209. The cubic root of 111399449 is about 481.1653527628.

The spelling of 111399449 in words is "one hundred eleven million, three hundred ninety-nine thousand, four hundred forty-nine".