1344640844 has 12 divisors (see below), whose sum is σ = 2360689968. Its totient is φ = 670158000.

The previous prime is 1344640837. The next prime is 1344640867. The reversal of 1344640844 is 4480464431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1344640798 and 1344640807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539207 + ... + 541694.

It is an arithmetic number, because the mean of its divisors is an integer number (196724164).

Almost surely, 2^1344640844 is an apocalyptic number.

It is an amenable number.

1344640844 is a deficient number, since it is larger than the sum of its proper divisors (1016049124).

1344640844 is a wasteful number, since it uses less digits than its factorization.

1344640844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081216 (or 1081214 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 38.

The square root of 1344640844 is about 36669.3447446229. The cubic root of 1344640844 is about 1103.7450434759.

The spelling of 1344640844 in words is "one billion, three hundred forty-four million, six hundred forty thousand, eight hundred forty-four".