10423409209 has 2 divisors, whose sum is σ = 10423409210. Its totient is φ = 10423409208.

The previous prime is 10423409197. The next prime is 10423409233. The reversal of 10423409209 is 90290432401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9212160400 + 1211248809 = 95980^2 + 34803^2 .

It is a cyclic number.

It is not a de Polignac number, because 10423409209 - 2⁷ = 10423409081 is a prime.

It is not a weakly prime, because it can be changed into another prime (10423409239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5211704604 + 5211704605.

It is an arithmetic number, because the mean of its divisors is an integer number (5211704605).

Almost surely, 2^10423409209 is an apocalyptic number.

It is an amenable number.

10423409209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10423409209 is an equidigital number, since it uses as much as digits as its factorization.

10423409209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 10423409209 in words is "ten billion, four hundred twenty-three million, four hundred nine thousand, two hundred nine".