29919899 has 2 divisors, whose sum is σ = 29919900. Its totient is φ = 29919898.

The previous prime is 29919863. The next prime is 29919919. The reversal of 29919899 is 99891992.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29919899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29919859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14959949 + 14959950.

It is an arithmetic number, because the mean of its divisors is an integer number (14959950).

Almost surely, 2^29919899 is an apocalyptic number.

29919899 is a deficient number, since it is larger than the sum of its proper divisors (1).

29919899 is an equidigital number, since it uses as much as digits as its factorization.

29919899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 56.

The square root of 29919899 is about 5469.9085001488. The cubic root of 29919899 is about 310.4464569541.

The spelling of 29919899 in words is "twenty-nine million, nine hundred nineteen thousand, eight hundred ninety-nine".