29808989 has 8 divisors (see below), whose sum is σ = 35548800. Its totient is φ = 24439536.

The previous prime is 29808971. The next prime is 29809001. The reversal of 29808989 is 98980892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29808989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 29808989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29828989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92414 + ... + 92735.

It is an arithmetic number, because the mean of its divisors is an integer number (4443600).

Almost surely, 2^29808989 is an apocalyptic number.

It is an amenable number.

29808989 is a deficient number, since it is larger than the sum of its proper divisors (5739811).

29808989 is a wasteful number, since it uses less digits than its factorization.

29808989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185179.

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 29808989 is about 5459.7608922003. The cubic root of 29808989 is about 310.0623842539.

The spelling of 29808989 in words is "twenty-nine million, eight hundred eight thousand, nine hundred eighty-nine".