29938891 has 2 divisors, whose sum is σ = 29938892. Its totient is φ = 29938890.

The previous prime is 29938877. The next prime is 29938967. The reversal of 29938891 is 19883992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29938891 - 2⁹ = 29938379 is a prime.

It is not a weakly prime, because it can be changed into another prime (29935891) 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, 14969445 + 14969446.

It is an arithmetic number, because the mean of its divisors is an integer number (14969446).

Almost surely, 2^29938891 is an apocalyptic number.

29938891 is a deficient number, since it is larger than the sum of its proper divisors (1).

29938891 is an equidigital number, since it uses as much as digits as its factorization.

29938891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 49.

The square root of 29938891 is about 5471.6442684078. The cubic root of 29938891 is about 310.5121295469.

The spelling of 29938891 in words is "twenty-nine million, nine hundred thirty-eight thousand, eight hundred ninety-one".