29989709109 has 32 divisors (see below), whose sum is σ = 45608153600. Its totient is φ = 19469548800.

The previous prime is 29989709083. The next prime is 29989709119. The reversal of 29989709109 is 90190798992.

It is not a de Polignac number, because 29989709109 - 2⁵ = 29989709077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29989709119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59409 + ... + 252009.

It is an arithmetic number, because the mean of its divisors is an integer number (1425254800).

Almost surely, 2^29989709109 is an apocalyptic number.

It is an amenable number.

29989709109 is a deficient number, since it is larger than the sum of its proper divisors (15618444491).

29989709109 is a wasteful number, since it uses less digits than its factorization.

29989709109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192762 (or 192756 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 63.

The spelling of 29989709109 in words is "twenty-nine billion, nine hundred eighty-nine million, seven hundred nine thousand, one hundred nine".