1244402443 has 4 divisors (see below), whose sum is σ = 1255414968. Its totient is φ = 1233389920.

The previous prime is 1244402437. The next prime is 1244402447. The reversal of 1244402443 is 3442044421.

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

It is a cyclic number.

It is not a de Polignac number, because 1244402443 - 2⁹ = 1244401931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244402447) 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, 5506093 + ... + 5506318.

It is an arithmetic number, because the mean of its divisors is an integer number (313853742).

Almost surely, 2^1244402443 is an apocalyptic number.

1244402443 is a deficient number, since it is larger than the sum of its proper divisors (11012525).

1244402443 is a wasteful number, since it uses less digits than its factorization.

1244402443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012524.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1244402443 is about 35276.0888279866. The cubic root of 1244402443 is about 1075.6069960825.

Adding to 1244402443 its reverse (3442044421), we get a palindrome (4686446864).

The spelling of 1244402443 in words is "one billion, two hundred forty-four million, four hundred two thousand, four hundred forty-three".