29807189 has 2 divisors, whose sum is σ = 29807190. Its totient is φ = 29807188.

The previous prime is 29807179. The next prime is 29807191. The reversal of 29807189 is 98170892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 4656964 = 5015^2 + 2158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29807189 is a prime.

Together with 29807191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29807119) 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, 14903594 + 14903595.

It is an arithmetic number, because the mean of its divisors is an integer number (14903595).

Almost surely, 2^29807189 is an apocalyptic number.

It is an amenable number.

29807189 is a deficient number, since it is larger than the sum of its proper divisors (1).

29807189 is an equidigital number, since it uses as much as digits as its factorization.

29807189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 29807189 is about 5459.5960473280. The cubic root of 29807189 is about 310.0561431440.

The spelling of 29807189 in words is "twenty-nine million, eight hundred seven thousand, one hundred eighty-nine".