1444428553 has 8 divisors (see below), whose sum is σ = 1451907072. Its totient is φ = 1436968656.

The previous prime is 1444428547. The next prime is 1444428571. The reversal of 1444428553 is 3558244441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1444428553 - 2¹³ = 1444420361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444428593) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 166776 + ... + 175222.

It is an arithmetic number, because the mean of its divisors is an integer number (181488384).

Almost surely, 2^1444428553 is an apocalyptic number.

It is an amenable number.

1444428553 is a deficient number, since it is larger than the sum of its proper divisors (7478519).

1444428553 is an equidigital number, since it uses as much as digits as its factorization.

1444428553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311.

The product of its digits is 307200, while the sum is 40.

The square root of 1444428553 is about 38005.6384369477. The cubic root of 1444428553 is about 1130.3996688422.

The spelling of 1444428553 in words is "one billion, four hundred forty-four million, four hundred twenty-eight thousand, five hundred fifty-three".