4479509 has 2 divisors, whose sum is σ = 4479510. Its totient is φ = 4479508.

The previous prime is 4479493. The next prime is 4479581. The reversal of 4479509 is 9059744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 1203409 = 1810^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 4479509 - 2⁴ = 4479493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4479809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239754 + 2239755.

It is an arithmetic number, because the mean of its divisors is an integer number (2239755).

Almost surely, 2^4479509 is an apocalyptic number.

It is an amenable number.

4479509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4479509 is an equidigital number, since it uses as much as digits as its factorization.

4479509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 4479509 is about 2116.4850578258. The cubic root of 4479509 is about 164.8453892989.

The spelling of 4479509 in words is "four million, four hundred seventy-nine thousand, five hundred nine".