485879209 has 4 divisors (see below), whose sum is σ = 507004416. Its totient is φ = 464754004.

The previous prime is 485879197. The next prime is 485879239. The reversal of 485879209 is 902978584.

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 not a de Polignac number, because 485879209 - 2²⁵ = 452324777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485879239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10562569 + ... + 10562614.

It is an arithmetic number, because the mean of its divisors is an integer number (126751104).

Almost surely, 2^485879209 is an apocalyptic number.

It is an amenable number.

485879209 is a deficient number, since it is larger than the sum of its proper divisors (21125207).

485879209 is a wasteful number, since it uses less digits than its factorization.

485879209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21125206.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 485879209 is about 22042.6679192878. The cubic root of 485879209 is about 786.1572766570.

The spelling of 485879209 in words is "four hundred eighty-five million, eight hundred seventy-nine thousand, two hundred nine".