29403949221 has 12 divisors (see below), whose sum is σ = 43842448000. Its totient is φ = 18970289640.

The previous prime is 29403949219. The next prime is 29403949229. The reversal of 29403949221 is 12294930492.

It is not a de Polignac number, because 29403949221 - 2¹ = 29403949219 is a prime.

It is a super-2 number, since 2×29403949221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29403949229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52694971 + ... + 52695528.

Almost surely, 2^29403949221 is an apocalyptic number.

It is an amenable number.

29403949221 is a deficient number, since it is larger than the sum of its proper divisors (14438498779).

29403949221 is a wasteful number, since it uses less digits than its factorization.

29403949221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105390536 (or 105390533 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 29403949221 in words is "twenty-nine billion, four hundred three million, nine hundred forty-nine thousand, two hundred twenty-one".