485099809 has 4 divisors (see below), whose sum is σ = 485336340. Its totient is φ = 484863280.

The previous prime is 485099807. The next prime is 485099837. The reversal of 485099809 is 908990584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 246490000 + 238609809 = 15700^2 + 15447^2 .

It is a cyclic number.

It is not a de Polignac number, because 485099809 - 2¹ = 485099807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485099807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115162 + ... + 119299.

It is an arithmetic number, because the mean of its divisors is an integer number (121334085).

Almost surely, 2^485099809 is an apocalyptic number.

It is an amenable number.

485099809 is a deficient number, since it is larger than the sum of its proper divisors (236531).

485099809 is a wasteful number, since it uses less digits than its factorization.

485099809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236530.

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 485099809 is about 22024.9814755881. The cubic root of 485099809 is about 785.7366927683.

The spelling of 485099809 in words is "four hundred eighty-five million, ninety-nine thousand, eight hundred nine".