1441356409 has 2 divisors, whose sum is σ = 1441356410. Its totient is φ = 1441356408.

The previous prime is 1441356391. The next prime is 1441356443. The reversal of 1441356409 is 9046531441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1359544384 + 81812025 = 36872^2 + 9045^2 .

It is an emirp because it is prime and its reverse (9046531441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1441356409 - 2⁷ = 1441356281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1441356809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720678204 + 720678205.

It is an arithmetic number, because the mean of its divisors is an integer number (720678205).

Almost surely, 2^1441356409 is an apocalyptic number.

It is an amenable number.

1441356409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441356409 is an equidigital number, since it uses as much as digits as its factorization.

1441356409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1441356409 is about 37965.1999731333. The cubic root of 1441356409 is about 1129.5976872046.

It can be divided in two parts, 144135 and 6409, that added together give a square (150544 = 388²).

The spelling of 1441356409 in words is "one billion, four hundred forty-one million, three hundred fifty-six thousand, four hundred nine".