1244040244 has 6 divisors (see below), whose sum is σ = 2177070434. Its totient is φ = 622020120.

The previous prime is 1244040209. The next prime is 1244040247. The reversal of 1244040244 is 4420404421.

It can be written as a sum of positive squares in only one way, i.e., 1185975844 + 58064400 = 34438^2 + 7620^2 .

It is a super-2 number, since 2×1244040244² = 3095272257383159072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244040247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155505027 + ... + 155505034.

Almost surely, 2^1244040244 is an apocalyptic number.

It is an amenable number.

1244040244 is a deficient number, since it is larger than the sum of its proper divisors (933030190).

1244040244 is a wasteful number, since it uses less digits than its factorization.

1244040244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311010065 (or 311010063 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1244040244 is about 35270.9546794526. The cubic root of 1244040244 is about 1075.5026296362.

Adding to 1244040244 its reverse (4420404421), we get a palindrome (5664444665).

The spelling of 1244040244 in words is "one billion, two hundred forty-four million, forty thousand, two hundred forty-four".