29906545447 has 4 divisors (see below), whose sum is σ = 29912399680. Its totient is φ = 29900691216.

The previous prime is 29906545429. The next prime is 29906545477. The reversal of 29906545447 is 74454560992.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29906545447 - 2¹¹ = 29906543399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29906545477) 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, 2919447 + ... + 2929672.

It is an arithmetic number, because the mean of its divisors is an integer number (7478099920).

Almost surely, 2^29906545447 is an apocalyptic number.

29906545447 is a deficient number, since it is larger than the sum of its proper divisors (5854233).

29906545447 is an equidigital number, since it uses as much as digits as its factorization.

29906545447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854232.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 29906545447 in words is "twenty-nine billion, nine hundred six million, five hundred forty-five thousand, four hundred forty-seven".