29975147 has 2 divisors, whose sum is σ = 29975148. Its totient is φ = 29975146.

The previous prime is 29975129. The next prime is 29975149. The reversal of 29975147 is 74157992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29975147 - 2¹⁰ = 29974123 is a prime.

Together with 29975149, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 29975098 and 29975107.

It is not a weakly prime, because it can be changed into another prime (29975149) 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, 14987573 + 14987574.

It is an arithmetic number, because the mean of its divisors is an integer number (14987574).

Almost surely, 2^29975147 is an apocalyptic number.

29975147 is a deficient number, since it is larger than the sum of its proper divisors (1).

29975147 is an equidigital number, since it uses as much as digits as its factorization.

29975147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 29975147 is about 5474.9563468579. The cubic root of 29975147 is about 310.6374223906.

The spelling of 29975147 in words is "twenty-nine million, nine hundred seventy-five thousand, one hundred forty-seven".