320469 has 4 divisors (see below), whose sum is σ = 427296. Its totient is φ = 213644.

The previous prime is 320449. The next prime is 320471. The reversal of 320469 is 964023.

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: 964023 = 3 ⋅321341.

It is a cyclic number.

It is not a de Polignac number, because 320469 - 2⁸ = 320213 is a prime.

It is a super-2 number, since 2×320469² = 205400759922, which contains 22 as substring.

It is a D-number.

320469 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53409 + ... + 53414.

It is an arithmetic number, because the mean of its divisors is an integer number (106824).

2³²⁰⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

320469 is a deficient number, since it is larger than the sum of its proper divisors (106827).

320469 is a wasteful number, since it uses less digits than its factorization.

320469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106826.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 320469 is about 566.0998145204. The cubic root of 320469 is about 68.4324373353.

The spelling of 320469 in words is "three hundred twenty thousand, four hundred sixty-nine".