29985899 has 2 divisors, whose sum is σ = 29985900. Its totient is φ = 29985898.

The previous prime is 29985889. The next prime is 29985911. The reversal of 29985899 is 99858992.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29985899 is a prime.

It is not a weakly prime, because it can be changed into another prime (29985829) 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, 14992949 + 14992950.

It is an arithmetic number, because the mean of its divisors is an integer number (14992950).

Almost surely, 2^29985899 is an apocalyptic number.

29985899 is a deficient number, since it is larger than the sum of its proper divisors (1).

29985899 is an equidigital number, since it uses as much as digits as its factorization.

29985899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 59.

The square root of 29985899 is about 5475.9381844575. The cubic root of 29985899 is about 310.6745595374.

The spelling of 29985899 in words is "twenty-nine million, nine hundred eighty-five thousand, eight hundred ninety-nine".