29997949 has 2 divisors, whose sum is σ = 29997950. Its totient is φ = 29997948.

The previous prime is 29997917. The next prime is 29997953. The reversal of 29997949 is 94979992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21483225 + 8514724 = 4635^2 + 2918^2 .

It is a cyclic number.

It is not a de Polignac number, because 29997949 - 2⁵ = 29997917 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 29997893 and 29997902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998974 + 14998975.

It is an arithmetic number, because the mean of its divisors is an integer number (14998975).

Almost surely, 2^29997949 is an apocalyptic number.

It is an amenable number.

29997949 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997949 is an equidigital number, since it uses as much as digits as its factorization.

29997949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 58.

The square root of 29997949 is about 5477.0383420239. The cubic root of 29997949 is about 310.7161693964.

The spelling of 29997949 in words is "twenty-nine million, nine hundred ninety-seven thousand, nine hundred forty-nine".