2079309 has 4 divisors (see below), whose sum is σ = 2772416. Its totient is φ = 1386204.

The previous prime is 2079299. The next prime is 2079323. The reversal of 2079309 is 9039702.

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 not a de Polignac number, because 2079309 - 2⁴ = 2079293 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2079109) 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, 346549 + ... + 346554.

It is an arithmetic number, because the mean of its divisors is an integer number (693104).

2^2079309 is an apocalyptic number.

It is an amenable number.

2079309 is a deficient number, since it is larger than the sum of its proper divisors (693107).

2079309 is an equidigital number, since it uses as much as digits as its factorization.

2079309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693106.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 2079309 is about 1441.9809291388. The cubic root of 2079309 is about 127.6359488011.

It can be divided in two parts, 2079 and 309, that multiplied together give a triangular number (642411 = T₁₁₃₃).

The spelling of 2079309 in words is "two million, seventy-nine thousand, three hundred nine".