23429947 has 2 divisors, whose sum is σ = 23429948. Its totient is φ = 23429946.

The previous prime is 23429921. The next prime is 23429951. The reversal of 23429947 is 74992432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23429947 - 2²³ = 15041339 is a prime.

It is a super-3 number, since 3×23429947³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23429447) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11714973 + 11714974.

It is an arithmetic number, because the mean of its divisors is an integer number (11714974).

Almost surely, 2^23429947 is an apocalyptic number.

23429947 is a deficient number, since it is larger than the sum of its proper divisors (1).

23429947 is an equidigital number, since it uses as much as digits as its factorization.

23429947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 23429947 is about 4840.4490494168. The cubic root of 23429947 is about 286.1478159073.

The spelling of 23429947 in words is "twenty-three million, four hundred twenty-nine thousand, nine hundred forty-seven".