143609 has 2 divisors, whose sum is σ = 143610. Its totient is φ = 143608.

The previous prime is 143593. The next prime is 143617. The reversal of 143609 is 906341.

143609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102400 + 41209 = 320^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 143609 - 2⁴ = 143593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71804 + 71805.

It is an arithmetic number, because the mean of its divisors is an integer number (71805).

2¹⁴³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

143609 is a deficient number, since it is larger than the sum of its proper divisors (1).

143609 is an equidigital number, since it uses as much as digits as its factorization.

143609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 143609 is about 378.9577812897. The cubic root of 143609 is about 52.3673446090.

The spelling of 143609 in words is "one hundred forty-three thousand, six hundred nine".