29138899 has 4 divisors (see below), whose sum is σ = 29538136. Its totient is φ = 28739664.

The previous prime is 29138891. The next prime is 29138929. The reversal of 29138899 is 99883192.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29138899 - 2³ = 29138891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29138891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199509 + ... + 199654.

It is an arithmetic number, because the mean of its divisors is an integer number (7384534).

Almost surely, 2^29138899 is an apocalyptic number.

29138899 is a deficient number, since it is larger than the sum of its proper divisors (399237).

29138899 is an equidigital number, since it uses as much as digits as its factorization.

29138899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399236.

The product of its digits is 279936, while the sum is 49.

The square root of 29138899 is about 5398.0458501202. The cubic root of 29138899 is about 307.7214092715.

The spelling of 29138899 in words is "twenty-nine million, one hundred thirty-eight thousand, eight hundred ninety-nine".