441513509 has 2 divisors, whose sum is σ = 441513510. Its totient is φ = 441513508.

The previous prime is 441513503. The next prime is 441513529. The reversal of 441513509 is 905315144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355209409 + 86304100 = 18847^2 + 9290^2 .

It is a cyclic number.

It is not a de Polignac number, because 441513509 - 2⁴ = 441513493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441513503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220756754 + 220756755.

It is an arithmetic number, because the mean of its divisors is an integer number (220756755).

Almost surely, 2^441513509 is an apocalyptic number.

It is an amenable number.

441513509 is a deficient number, since it is larger than the sum of its proper divisors (1).

441513509 is an equidigital number, since it uses as much as digits as its factorization.

441513509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 441513509 is about 21012.2228476665. Note that the first 3 decimals coincide. The cubic root of 441513509 is about 761.4615854505.

The spelling of 441513509 in words is "four hundred forty-one million, five hundred thirteen thousand, five hundred nine".