144570809 has 2 divisors, whose sum is σ = 144570810. Its totient is φ = 144570808.

The previous prime is 144570787. The next prime is 144570817. The reversal of 144570809 is 908075441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138180025 + 6390784 = 11755^2 + 2528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144570809 is a prime.

It is not a weakly prime, because it can be changed into another prime (144570409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72285404 + 72285405.

It is an arithmetic number, because the mean of its divisors is an integer number (72285405).

Almost surely, 2^144570809 is an apocalyptic number.

It is an amenable number.

144570809 is a deficient number, since it is larger than the sum of its proper divisors (1).

144570809 is an equidigital number, since it uses as much as digits as its factorization.

144570809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 144570809 is about 12023.7601855659. The cubic root of 144570809 is about 524.8399318515.

The spelling of 144570809 in words is "one hundred forty-four million, five hundred seventy thousand, eight hundred nine".