479309 has 2 divisors, whose sum is σ = 479310. Its totient is φ = 479308.

The previous prime is 479299. The next prime is 479317. The reversal of 479309 is 903974.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426409 + 52900 = 653^2 + 230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479309 is a prime.

It is a Chen prime.

It is equal to p₃₉₉₅₆ and since 479309 and 39956 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239654 + 239655.

It is an arithmetic number, because the mean of its divisors is an integer number (239655).

2⁴⁷⁹³⁰⁹ is an apocalyptic number.

It is an amenable number.

479309 is a deficient number, since it is larger than the sum of its proper divisors (1).

479309 is an equidigital number, since it uses as much as digits as its factorization.

479309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 479309 is about 692.3214571281. The cubic root of 479309 is about 78.2597629249.

The spelling of 479309 in words is "four hundred seventy-nine thousand, three hundred nine".