29668399 has 2 divisors, whose sum is σ = 29668400. Its totient is φ = 29668398.

The previous prime is 29668391. The next prime is 29668403. The reversal of 29668399 is 99386692.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29668399 - 2³ = 29668391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29668391) 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, 14834199 + 14834200.

It is an arithmetic number, because the mean of its divisors is an integer number (14834200).

Almost surely, 2^29668399 is an apocalyptic number.

29668399 is a deficient number, since it is larger than the sum of its proper divisors (1).

29668399 is an equidigital number, since it uses as much as digits as its factorization.

29668399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 52.

The square root of 29668399 is about 5446.8705694187. The cubic root of 29668399 is about 309.5741603593.

The spelling of 29668399 in words is "twenty-nine million, six hundred sixty-eight thousand, three hundred ninety-nine".