23434009 has 2 divisors, whose sum is σ = 23434010. Its totient is φ = 23434008.

The previous prime is 23433989. The next prime is 23434043. The reversal of 23434009 is 90043432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16224784 + 7209225 = 4028^2 + 2685^2 .

It is a cyclic number.

It is not a de Polignac number, because 23434009 - 2⁷ = 23433881 is a prime.

It is not a weakly prime, because it can be changed into another prime (23434069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11717004 + 11717005.

It is an arithmetic number, because the mean of its divisors is an integer number (11717005).

Almost surely, 2^23434009 is an apocalyptic number.

It is an amenable number.

23434009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23434009 is an equidigital number, since it uses as much as digits as its factorization.

23434009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23434009 is about 4840.8686204027. The cubic root of 23434009 is about 286.1643512309.

It can be divided in two parts, 234 and 34009, that added together give a palindrome (34243).

The spelling of 23434009 in words is "twenty-three million, four hundred thirty-four thousand, nine".