1443440041 has 4 divisors (see below), whose sum is σ = 1482451972. Its totient is φ = 1404428112.

The previous prime is 1443439999. The next prime is 1443440087. The reversal of 1443440041 is 1400443441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1368704016 + 74736025 = 36996^2 + 8645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443440041 - 2¹³ = 1443431849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1443439988 and 1443440015.

It is not an unprimeable number, because it can be changed into a prime (1443440741) 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 3 ways as a sum of consecutive naturals, for example, 19505910 + ... + 19505983.

It is an arithmetic number, because the mean of its divisors is an integer number (370612993).

Almost surely, 2^1443440041 is an apocalyptic number.

It is an amenable number.

1443440041 is a deficient number, since it is larger than the sum of its proper divisors (39011931).

1443440041 is an equidigital number, since it uses as much as digits as its factorization.

1443440041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39011930.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1443440041 is about 37992.6314039973. The cubic root of 1443440041 is about 1130.1417424724.

Adding to 1443440041 its reverse (1400443441), we get a palindrome (2843883482).

The spelling of 1443440041 in words is "one billion, four hundred forty-three million, four hundred forty thousand, forty-one".