29999009 has 4 divisors (see below), whose sum is σ = 30183216. Its totient is φ = 29814804.

The previous prime is 29998973. The next prime is 29999063. The reversal of 29999009 is 90099992.

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 a de Polignac number, because none of the positive numbers 2^k-29999009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29999069) 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, 91859 + ... + 92184.

It is an arithmetic number, because the mean of its divisors is an integer number (7545804).

Almost surely, 2^29999009 is an apocalyptic number.

It is an amenable number.

29999009 is a deficient number, since it is larger than the sum of its proper divisors (184207).

29999009 is a wasteful number, since it uses less digits than its factorization.

29999009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184206.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 29999009 is about 5477.1351087955. The cubic root of 29999009 is about 310.7198291495.

The spelling of 29999009 in words is "twenty-nine million, nine hundred ninety-nine thousand, nine".