23638429 has 2 divisors, whose sum is σ = 23638430. Its totient is φ = 23638428.

The previous prime is 23638387. The next prime is 23638441. The reversal of 23638429 is 92483632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19598329 + 4040100 = 4427^2 + 2010^2 .

It is a cyclic number.

It is not a de Polignac number, because 23638429 - 2¹⁵ = 23605661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23638499) 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 as a sum of consecutive naturals, namely, 11819214 + 11819215.

It is an arithmetic number, because the mean of its divisors is an integer number (11819215).

Almost surely, 2^23638429 is an apocalyptic number.

It is an amenable number.

23638429 is a deficient number, since it is larger than the sum of its proper divisors (1).

23638429 is an equidigital number, since it uses as much as digits as its factorization.

23638429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 23638429 is about 4861.9367540107. The cubic root of 23638429 is about 286.9940348487.

The spelling of 23638429 in words is "twenty-three million, six hundred thirty-eight thousand, four hundred twenty-nine".