29978945209 has 8 divisors (see below), whose sum is σ = 30320110080. Its totient is φ = 29637876576.

The previous prime is 29978945207. The next prime is 29978945287. The reversal of 29978945209 is 90254987992.

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

It is a cyclic number.

It is not a de Polignac number, because 29978945209 - 2¹ = 29978945207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29978945207) 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, 739152 + ... + 778654.

It is an arithmetic number, because the mean of its divisors is an integer number (3790013760).

Almost surely, 2^29978945209 is an apocalyptic number.

It is an amenable number.

29978945209 is a deficient number, since it is larger than the sum of its proper divisors (341164871).

29978945209 is an equidigital number, since it uses as much as digits as its factorization.

29978945209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48119.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 29978945209 in words is "twenty-nine billion, nine hundred seventy-eight million, nine hundred forty-five thousand, two hundred nine".