1344403553 has 4 divisors (see below), whose sum is σ = 1347438768. Its totient is φ = 1341368340.

The previous prime is 1344403549. The next prime is 1344403573. The reversal of 1344403553 is 3553044431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3553044431 = 103 ⋅34495577.

It is a cyclic number.

It is not a de Polignac number, because 1344403553 - 2² = 1344403549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344403513) 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, 1516943 + ... + 1517828.

It is an arithmetic number, because the mean of its divisors is an integer number (336859692).

Almost surely, 2^1344403553 is an apocalyptic number.

It is an amenable number.

1344403553 is a deficient number, since it is larger than the sum of its proper divisors (3035215).

1344403553 is an equidigital number, since it uses as much as digits as its factorization.

1344403553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035214.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 1344403553 is about 36666.1090518206. The cubic root of 1344403553 is about 1103.6801130834.

Adding to 1344403553 its reverse (3553044431), we get a palindrome (4897447984).

The spelling of 1344403553 in words is "one billion, three hundred forty-four million, four hundred three thousand, five hundred fifty-three".