29811109 has 2 divisors, whose sum is σ = 29811110. Its totient is φ = 29811108.

The previous prime is 29811097. The next prime is 29811137. The reversal of 29811109 is 90111892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27531009 + 2280100 = 5247^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 29811109 - 2⁵ = 29811077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29811139) 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, 14905554 + 14905555.

It is an arithmetic number, because the mean of its divisors is an integer number (14905555).

Almost surely, 2^29811109 is an apocalyptic number.

It is an amenable number.

29811109 is a deficient number, since it is larger than the sum of its proper divisors (1).

29811109 is an equidigital number, since it uses as much as digits as its factorization.

29811109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 29811109 is about 5459.9550364449. The cubic root of 29811109 is about 310.0697345722.

The spelling of 29811109 in words is "twenty-nine million, eight hundred eleven thousand, one hundred nine".