29929909 has 2 divisors, whose sum is σ = 29929910. Its totient is φ = 29929908.

The previous prime is 29929903. The next prime is 29929919. The reversal of 29929909 is 90992992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29669809 + 260100 = 5447^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 29929909 - 2³ = 29929901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29929901) 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, 14964954 + 14964955.

It is an arithmetic number, because the mean of its divisors is an integer number (14964955).

Almost surely, 2^29929909 is an apocalyptic number.

It is an amenable number.

29929909 is a deficient number, since it is larger than the sum of its proper divisors (1).

29929909 is an equidigital number, since it uses as much as digits as its factorization.

29929909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 29929909 is about 5470.8234297956. The cubic root of 29929909 is about 310.4810740779.

The spelling of 29929909 in words is "twenty-nine million, nine hundred twenty-nine thousand, nine hundred nine".