4865209 has 4 divisors (see below), whose sum is σ = 4902480. Its totient is φ = 4827940.

The previous prime is 4865207. The next prime is 4865219. The reversal of 4865209 is 9025684.

It is a happy number.

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 4865209 - 2¹ = 4865207 is a prime.

It is a super-2 number, since 2×4865209² = 47340517227362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4865207) 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, 18439 + ... + 18700.

It is an arithmetic number, because the mean of its divisors is an integer number (1225620).

Almost surely, 2^4865209 is an apocalyptic number.

It is an amenable number.

4865209 is a deficient number, since it is larger than the sum of its proper divisors (37271).

4865209 is a wasteful number, since it uses less digits than its factorization.

4865209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37270.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 4865209 is about 2205.7218773000. The cubic root of 4865209 is about 169.4469803397.

The spelling of 4865209 in words is "four million, eight hundred sixty-five thousand, two hundred nine".