1244401113 has 4 divisors (see below), whose sum is σ = 1659201488. Its totient is φ = 829600740.

The previous prime is 1244401111. The next prime is 1244401121. The reversal of 1244401113 is 3111044421.

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.

It is not a de Polignac number, because 1244401113 - 2¹ = 1244401111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244401113.

It is not an unprimeable number, because it can be changed into a prime (1244401111) 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, 207400183 + ... + 207400188.

It is an arithmetic number, because the mean of its divisors is an integer number (414800372).

Almost surely, 2^1244401113 is an apocalyptic number.

It is an amenable number.

1244401113 is a deficient number, since it is larger than the sum of its proper divisors (414800375).

1244401113 is an equidigital number, since it uses as much as digits as its factorization.

1244401113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414800374.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1244401113 is about 35276.0699766853. The cubic root of 1244401113 is about 1075.6066128845.

Adding to 1244401113 its reverse (3111044421), we get a palindrome (4355445534).

The spelling of 1244401113 in words is "one billion, two hundred forty-four million, four hundred one thousand, one hundred thirteen".