439469 has 4 divisors (see below), whose sum is σ = 440796. Its totient is φ = 438144.

The previous prime is 439463. The next prime is 439471. The reversal of 439469 is 964934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 316969 = 350^2 + 563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439469 is a prime.

It is a super-2 number, since 2×439469² = 386266003922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439463) 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, 317 + ... + 989.

It is an arithmetic number, because the mean of its divisors is an integer number (110199).

2⁴³⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

439469 is a deficient number, since it is larger than the sum of its proper divisors (1327).

439469 is an equidigital number, since it uses as much as digits as its factorization.

439469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its digits is 23328, while the sum is 35.

The square root of 439469 is about 662.9245809291. The cubic root of 439469 is about 76.0284404177.

The spelling of 439469 in words is "four hundred thirty-nine thousand, four hundred sixty-nine".