29491229091 has 8 divisors (see below), whose sum is σ = 40236095680. Its totient is φ = 19203590952.

The previous prime is 29491229071. The next prime is 29491229099. The reversal of 29491229091 is 19092219492.

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

It is not a de Polignac number, because 29491229091 - 2⁹ = 29491228579 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 29491229091.

It is not an unprimeable number, because it can be changed into a prime (29491229099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114306961 + ... + 114307218.

It is an arithmetic number, because the mean of its divisors is an integer number (5029511960).

Almost surely, 2^29491229091 is an apocalyptic number.

29491229091 is a deficient number, since it is larger than the sum of its proper divisors (10744866589).

29491229091 is a wasteful number, since it uses less digits than its factorization.

29491229091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228614225.

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 29491229091 in words is "twenty-nine billion, four hundred ninety-one million, two hundred twenty-nine thousand, ninety-one".