2309039 has 4 divisors (see below), whose sum is σ = 2409456. Its totient is φ = 2208624.

The previous prime is 2309029. The next prime is 2309077. The reversal of 2309039 is 9309032.

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

It is a cyclic number.

It is not a de Polignac number, because 2309039 - 2⁴ = 2309023 is a prime.

It is a super-2 number, since 2×2309039² = 10663322207042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2308999 and 2309017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309029) 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, 50174 + ... + 50219.

It is an arithmetic number, because the mean of its divisors is an integer number (602364).

2^2309039 is an apocalyptic number.

2309039 is a deficient number, since it is larger than the sum of its proper divisors (100417).

2309039 is a wasteful number, since it uses less digits than its factorization.

2309039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100416.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 2309039 is about 1519.5522366803. The cubic root of 2309039 is about 132.1733069486.

The spelling of 2309039 in words is "two million, three hundred nine thousand, thirty-nine".