3009861 has 6 divisors (see below), whose sum is σ = 4347590. Its totient is φ = 2006568.

The previous prime is 3009859. The next prime is 3009887. The reversal of 3009861 is 1689003.

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 1368900 = 1281^2 + 1170^2 .

It is not a de Polignac number, because 3009861 - 2¹ = 3009859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3009361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167206 + ... + 167223.

Almost surely, 2^3009861 is an apocalyptic number.

It is an amenable number.

3009861 is a deficient number, since it is larger than the sum of its proper divisors (1337729).

3009861 is a wasteful number, since it uses less digits than its factorization.

3009861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334435 (or 334432 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 3009861 is about 1734.8950976932. The cubic root of 3009861 is about 144.3828066842.

The spelling of 3009861 in words is "three million, nine thousand, eight hundred sixty-one".