2352809 has 4 divisors (see below), whose sum is σ = 2357700. Its totient is φ = 2347920.

The previous prime is 2352803. The next prime is 2352811. The reversal of 2352809 is 9082532.

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 384400 + 1968409 = 620^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2352809 - 2¹² = 2348713 is a prime.

It is a super-3 number, since 3×2352809³ = 39073406272666233387, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2352803) 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, 1634 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (589425).

2^2352809 is an apocalyptic number.

It is an amenable number.

2352809 is a deficient number, since it is larger than the sum of its proper divisors (4891).

2352809 is an equidigital number, since it uses as much as digits as its factorization.

2352809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2352809 is about 1533.8868928314. The cubic root of 2352809 is about 133.0032411067.

The spelling of 2352809 in words is "two million, three hundred fifty-two thousand, eight hundred nine".