29789811109 has 4 divisors (see below), whose sum is σ = 29829478720. Its totient is φ = 29750143500.

The previous prime is 29789811097. The next prime is 29789811133. The reversal of 29789811109 is 90111898792.

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 29789811109 - 2¹¹ = 29789809061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29789811109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29789811169) 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, 19832679 + ... + 19834180.

It is an arithmetic number, because the mean of its divisors is an integer number (7457369680).

Almost surely, 2^29789811109 is an apocalyptic number.

It is an amenable number.

29789811109 is a deficient number, since it is larger than the sum of its proper divisors (39667611).

29789811109 is an equidigital number, since it uses as much as digits as its factorization.

29789811109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39667610.

The product of its (nonzero) digits is 653184, while the sum is 55.

The spelling of 29789811109 in words is "twenty-nine billion, seven hundred eighty-nine million, eight hundred eleven thousand, one hundred nine".