1441509 has 4 divisors (see below), whose sum is σ = 1922016. Its totient is φ = 961004.

The previous prime is 1441471. The next prime is 1441523. The reversal of 1441509 is 9051441.

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.

It is a cyclic number.

It is not a de Polignac number, because 1441509 - 2⁷ = 1441381 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441529) 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, 240249 + ... + 240254.

It is an arithmetic number, because the mean of its divisors is an integer number (480504).

2^1441509 is an apocalyptic number.

It is an amenable number.

1441509 is a deficient number, since it is larger than the sum of its proper divisors (480507).

1441509 is an equidigital number, since it uses as much as digits as its factorization.

1441509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480506.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1441509 is about 1200.6285853668. The cubic root of 1441509 is about 112.9637547889.

It can be divided in two parts, 144 and 1509, that added together give a triangular number (1653 = T₅₇).

The spelling of 1441509 in words is "one million, four hundred forty-one thousand, five hundred nine".