11244431909 has 8 divisors (see below), whose sum is σ = 11396786808. Its totient is φ = 11092881600.

The previous prime is 11244431903. The next prime is 11244431921. The reversal of 11244431909 is 90913444211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 335256100 + 10909175809 = 18310^2 + 104447^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11244431909 - 2¹² = 11244427813 is a prime.

It is a super-2 number, since 2×11244431909² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11244431903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172982 + ... + 228935.

It is an arithmetic number, because the mean of its divisors is an integer number (1424598351).

Almost surely, 2^11244431909 is an apocalyptic number.

It is an amenable number.

11244431909 is a deficient number, since it is larger than the sum of its proper divisors (152354899).

11244431909 is a wasteful number, since it uses less digits than its factorization.

11244431909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402295.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 11244431909 in words is "eleven billion, two hundred forty-four million, four hundred thirty-one thousand, nine hundred nine".