2739309 has 4 divisors (see below), whose sum is σ = 3652416. Its totient is φ = 1826204.

The previous prime is 2739299. The next prime is 2739313. The reversal of 2739309 is 9039372.

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 2739309 - 2⁴ = 2739293 is a prime.

It is a D-number.

2739309 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2739309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739379) 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, 456549 + ... + 456554.

It is an arithmetic number, because the mean of its divisors is an integer number (913104).

2^2739309 is an apocalyptic number.

It is an amenable number.

2739309 is a deficient number, since it is larger than the sum of its proper divisors (913107).

2739309 is an equidigital number, since it uses as much as digits as its factorization.

2739309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913106.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 2739309 is about 1655.0857983803. The cubic root of 2739309 is about 139.9201755832.

The spelling of 2739309 in words is "two million, seven hundred thirty-nine thousand, three hundred nine".