2309005 has 4 divisors (see below), whose sum is σ = 2770812. Its totient is φ = 1847200.

The previous prime is 2309003. The next prime is 2309011. The reversal of 2309005 is 5009032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 244036 + 2064969 = 494^2 + 1437^2 .

It is not a de Polignac number, because 2309005 - 2¹ = 2309003 is a prime.

It is a Duffinian number.

2309005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309003) 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, 230896 + ... + 230905.

It is an arithmetic number, because the mean of its divisors is an integer number (692703).

2^2309005 is an apocalyptic number.

It is an amenable number.

2309005 is a deficient number, since it is larger than the sum of its proper divisors (461807).

2309005 is an equidigital number, since it uses as much as digits as its factorization.

2309005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461806.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 2309005 is about 1519.5410491329. The cubic root of 2309005 is about 132.1726582062.

The spelling of 2309005 in words is "two million, three hundred nine thousand, five".