479669 has 4 divisors (see below), whose sum is σ = 481344. Its totient is φ = 477996.

The previous prime is 479639. The next prime is 479701. The reversal of 479669 is 966974.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479669 is a prime.

It is a super-2 number, since 2×479669² = 460164699122, 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 (479629) 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, 287 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (120336).

2⁴⁷⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

479669 is a deficient number, since it is larger than the sum of its proper divisors (1675).

479669 is a wasteful number, since it uses less digits than its factorization.

479669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674.

The product of its digits is 81648, while the sum is 41.

The square root of 479669 is about 692.5814031578. The cubic root of 479669 is about 78.2793511683.

Adding to 479669 its sum of digits (41), we get a triangular number (479710 = T₉₇₉).

The spelling of 479669 in words is "four hundred seventy-nine thousand, six hundred sixty-nine".