1444553797 has 4 divisors (see below), whose sum is σ = 1445788576. Its totient is φ = 1443319020.

The previous prime is 1444553777. The next prime is 1444553833. The reversal of 1444553797 is 7973554441.

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: 7973554441 = 16349 ⋅487709.

It is a cyclic number.

It is not a de Polignac number, because 1444553797 - 2¹¹ = 1444551749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444553797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444553777) 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, 615633 + ... + 617974.

It is an arithmetic number, because the mean of its divisors is an integer number (361447144).

Almost surely, 2^1444553797 is an apocalyptic number.

It is an amenable number.

1444553797 is a deficient number, since it is larger than the sum of its proper divisors (1234779).

1444553797 is a wasteful number, since it uses less digits than its factorization.

1444553797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234778.

The product of its digits is 2116800, while the sum is 49.

The square root of 1444553797 is about 38007.2861041143. The cubic root of 1444553797 is about 1130.4323395904.

The spelling of 1444553797 in words is "one billion, four hundred forty-four million, five hundred fifty-three thousand, seven hundred ninety-seven".