29449648881 has 9 divisors (see below), whose sum is σ = 42539125369. Its totient is φ = 19632756036.

The previous prime is 29449648867. The next prime is 29449648883. The reversal of 29449648881 is 18884694492.

The square root of 29449648881 is 171609.

It is a perfect power (a square), and thus also a powerful number.

29449648881 is a `hidden beast` number, since 29 + 4 + 496 + 48 + 8 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 29449648881 - 2¹⁵ = 29449616113 is a prime.

It is a super-2 number, since 2×29449648881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29449648883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 486226 + ... + 543428.

Almost surely, 2^29449648881 is an apocalyptic number.

29449648881 is the 171609-th square number.

29449648881 is the 85805-th centered octagonal number.

It is an amenable number.

29449648881 is a deficient number, since it is larger than the sum of its proper divisors (13089476488).

29449648881 is an frugal number, since it uses more digits than its factorization.

29449648881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114412 (or 57206 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 29449648881 in words is "twenty-nine billion, four hundred forty-nine million, six hundred forty-eight thousand, eight hundred eighty-one".