1111144409 has 4 divisors (see below), whose sum is σ = 1122599604. Its totient is φ = 1099689216.

The previous prime is 1111144399. The next prime is 1111144423. The reversal of 1111144409 is 9044411111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 576240025 + 534904384 = 24005^2 + 23128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111144409 - 2¹² = 1111140313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111144459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5727452 + ... + 5727645.

It is an arithmetic number, because the mean of its divisors is an integer number (280649901).

Almost surely, 2^1111144409 is an apocalyptic number.

It is an amenable number.

1111144409 is a deficient number, since it is larger than the sum of its proper divisors (11455195).

1111144409 is an equidigital number, since it uses as much as digits as its factorization.

1111144409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11455194.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1111144409 is about 33333.8327979247. The cubic root of 1111144409 is about 1035.7545149762.

The spelling of 1111144409 in words is "one billion, one hundred eleven million, one hundred forty-four thousand, four hundred nine".