111444401 has 8 divisors (see below), whose sum is σ = 118794600. Its totient is φ = 104182528.

The previous prime is 111444397. The next prime is 111444439. The reversal of 111444401 is 104444111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3783025 + 107661376 = 1945^2 + 10376^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111444401 - 2² = 111444397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111444701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19466 + ... + 24531.

It is an arithmetic number, because the mean of its divisors is an integer number (14849325).

Almost surely, 2^111444401 is an apocalyptic number.

It is an amenable number.

111444401 is a deficient number, since it is larger than the sum of its proper divisors (7350199).

111444401 is a wasteful number, since it uses less digits than its factorization.

111444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44163.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 111444401 is about 10556.7230237418. The cubic root of 111444401 is about 481.2300641430.

Adding to 111444401 its reverse (104444111), we get a palindrome (215888512).

The spelling of 111444401 in words is "one hundred eleven million, four hundred forty-four thousand, four hundred one".