29938109 has 2 divisors, whose sum is σ = 29938110. Its totient is φ = 29938108.

The previous prime is 29938093. The next prime is 29938127. The reversal of 29938109 is 90183992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 1315609 = 5350^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 29938109 - 2⁴ = 29938093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29938189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14969054 + 14969055.

It is an arithmetic number, because the mean of its divisors is an integer number (14969055).

Almost surely, 2^29938109 is an apocalyptic number.

It is an amenable number.

29938109 is a deficient number, since it is larger than the sum of its proper divisors (1).

29938109 is an equidigital number, since it uses as much as digits as its factorization.

29938109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 29938109 is about 5471.5728086173. The cubic root of 29938109 is about 310.5094260110.

The spelling of 29938109 in words is "twenty-nine million, nine hundred thirty-eight thousand, one hundred nine".