360409 has 4 divisors (see below), whose sum is σ = 411904. Its totient is φ = 308916.

The previous prime is 360407. The next prime is 360421. The reversal of 360409 is 904063.

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, and also an emirpimes, since its reverse is a distinct semiprime: 904063 = 137 ⋅6599.

It is a cyclic number.

It is not a de Polignac number, because 360409 - 2¹ = 360407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 360409.

It is not an unprimeable number, because it can be changed into a prime (360407) 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, 25737 + ... + 25750.

It is an arithmetic number, because the mean of its divisors is an integer number (102976).

2³⁶⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

360409 is a deficient number, since it is larger than the sum of its proper divisors (51495).

360409 is an equidigital number, since it uses as much as digits as its factorization.

360409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51494.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 360409 is about 600.3407365822. The cubic root of 360409 is about 71.1647960673.

The spelling of 360409 in words is "three hundred sixty thousand, four hundred nine".