29118389 has 2 divisors, whose sum is σ = 29118390. Its totient is φ = 29118388.

The previous prime is 29118377. The next prime is 29118403. The reversal of 29118389 is 98381192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16337764 + 12780625 = 4042^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 29118389 - 2²⁰ = 28069813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29118589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14559194 + 14559195.

It is an arithmetic number, because the mean of its divisors is an integer number (14559195).

Almost surely, 2^29118389 is an apocalyptic number.

It is an amenable number.

29118389 is a deficient number, since it is larger than the sum of its proper divisors (1).

29118389 is an equidigital number, since it uses as much as digits as its factorization.

29118389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 41.

The square root of 29118389 is about 5396.1457541471. The cubic root of 29118389 is about 307.6491936915.

The spelling of 29118389 in words is "twenty-nine million, one hundred eighteen thousand, three hundred eighty-nine".