1144440454 has 16 divisors (see below), whose sum is σ = 1775195136. Its totient is φ = 552774600.

The previous prime is 1144440449. The next prime is 1144440457. The reversal of 1144440454 is 4540444411.

It is a super-2 number, since 2×1144440454² = 2619487905503452232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144440457) 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, 19239 + ... + 51565.

It is an arithmetic number, because the mean of its divisors is an integer number (110949696).

Almost surely, 2^1144440454 is an apocalyptic number.

1144440454 is a deficient number, since it is larger than the sum of its proper divisors (630754682).

1144440454 is a wasteful number, since it uses less digits than its factorization.

1144440454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32931.

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 1144440454 is about 33829.5795717298. The cubic root of 1144440454 is about 1045.9985126480.

Adding to 1144440454 its reverse (4540444411), we get a palindrome (5684884865).

The spelling of 1144440454 in words is "one billion, one hundred forty-four million, four hundred forty thousand, four hundred fifty-four".