360309 has 4 divisors (see below), whose sum is σ = 480416. Its totient is φ = 240204.

The previous prime is 360307. The next prime is 360317. The reversal of 360309 is 903063.

360309 is nontrivially palindromic in base 16.

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 not a de Polignac number, because 360309 - 2¹ = 360307 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

360309 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 360309.

It is not an unprimeable number, because it can be changed into a prime (360307) 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, 60049 + ... + 60054.

It is an arithmetic number, because the mean of its divisors is an integer number (120104).

2³⁶⁰³⁰⁹ is an apocalyptic number.

It is an amenable number.

360309 is a deficient number, since it is larger than the sum of its proper divisors (120107).

360309 is a wasteful number, since it uses less digits than its factorization.

360309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120106.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 360309 is about 600.2574447685. The cubic root of 360309 is about 71.1582136032.

The spelling of 360309 in words is "three hundred sixty thousand, three hundred nine".