29130009 has 4 divisors (see below), whose sum is σ = 38840016. Its totient is φ = 19420004.

The previous prime is 29129999. The next prime is 29130041. The reversal of 29130009 is 90003192.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29130009 - 2²¹ = 27032857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29130109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4854999 + ... + 4855004.

It is an arithmetic number, because the mean of its divisors is an integer number (9710004).

Almost surely, 2^29130009 is an apocalyptic number.

It is an amenable number.

29130009 is a deficient number, since it is larger than the sum of its proper divisors (9710007).

29130009 is an equidigital number, since it uses as much as digits as its factorization.

29130009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710006.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 29130009 is about 5397.2223411677. Note that the first 3 decimals coincide. The cubic root of 29130009 is about 307.6901118000.

The spelling of 29130009 in words is "twenty-nine million, one hundred thirty thousand, nine".