3105009 has 6 divisors (see below), whose sum is σ = 4485026. Its totient is φ = 2070000.

The previous prime is 3105007. The next prime is 3105041. The reversal of 3105009 is 9005013.

It can be written as a sum of positive squares in only one way, i.e., 2985984 + 119025 = 1728^2 + 345^2 .

It is not a de Polignac number, because 3105009 - 2¹ = 3105007 is a prime.

It is a Duffinian number.

3105009 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3104982 and 3105000.

It is not an unprimeable number, because it can be changed into a prime (3105007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172492 + ... + 172509.

Almost surely, 2^3105009 is an apocalyptic number.

It is an amenable number.

3105009 is a deficient number, since it is larger than the sum of its proper divisors (1380017).

3105009 is a wasteful number, since it uses less digits than its factorization.

3105009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345007 (or 345004 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 3105009 is about 1762.1035724384. The cubic root of 3105009 is about 145.8884648876. Note that the first 3 decimals are identical.

The spelling of 3105009 in words is "three million, one hundred five thousand, nine".