10305409 has 4 divisors (see below), whose sum is σ = 10316800. Its totient is φ = 10294020.

The previous prime is 10305371. The next prime is 10305431. The reversal of 10305409 is 90450301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90450301 = 149 ⋅607049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10305409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10305409.

It is not an unprimeable number, because it can be changed into a prime (10305439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4209 + ... + 6190.

It is an arithmetic number, because the mean of its divisors is an integer number (2579200).

Almost surely, 2^10305409 is an apocalyptic number.

It is an amenable number.

10305409 is a deficient number, since it is larger than the sum of its proper divisors (11391).

10305409 is an equidigital number, since it uses as much as digits as its factorization.

10305409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11390.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 10305409 is about 3210.2038876059. The cubic root of 10305409 is about 217.6147912131.

The spelling of 10305409 in words is "ten million, three hundred five thousand, four hundred nine".