29897109 has 12 divisors (see below), whose sum is σ = 47110752. Its totient is φ = 18119400.

The previous prime is 29897107. The next prime is 29897143. The reversal of 29897109 is 90179892.

It is not a de Polignac number, because 29897109 - 2¹ = 29897107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29897107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150897 + ... + 151094.

It is an arithmetic number, because the mean of its divisors is an integer number (3925896).

Almost surely, 2^29897109 is an apocalyptic number.

It is an amenable number.

29897109 is a deficient number, since it is larger than the sum of its proper divisors (17213643).

29897109 is a wasteful number, since it uses less digits than its factorization.

29897109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302008 (or 302005 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 29897109 is about 5467.8248874667. The cubic root of 29897109 is about 310.3676145325.

The spelling of 29897109 in words is "twenty-nine million, eight hundred ninety-seven thousand, one hundred nine".