2839309 has 4 divisors (see below), whose sum is σ = 3097440. Its totient is φ = 2581180.

The previous prime is 2839307. The next prime is 2839313. The reversal of 2839309 is 9039382.

2839309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2839309 - 2¹ = 2839307 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 (2839301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129049 + ... + 129070.

It is an arithmetic number, because the mean of its divisors is an integer number (774360).

2^2839309 is an apocalyptic number.

It is an amenable number.

2839309 is a deficient number, since it is larger than the sum of its proper divisors (258131).

2839309 is a wasteful number, since it uses less digits than its factorization.

2839309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258130.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2839309 is about 1685.0249256317. The cubic root of 2839309 is about 141.6024887313.

The spelling of 2839309 in words is "two million, eight hundred thirty-nine thousand, three hundred nine".