29966729 has 4 divisors (see below), whose sum is σ = 32271876. Its totient is φ = 27661584.

The previous prime is 29966701. The next prime is 29966759. The reversal of 29966729 is 92766992.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 10368400 = 4427^2 + 3220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29966729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29966759) 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, 1152554 + ... + 1152579.

It is an arithmetic number, because the mean of its divisors is an integer number (8067969).

Almost surely, 2^29966729 is an apocalyptic number.

It is an amenable number.

29966729 is a deficient number, since it is larger than the sum of its proper divisors (2305147).

29966729 is a wasteful number, since it uses less digits than its factorization.

29966729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305146.

The product of its digits is 734832, while the sum is 50.

The square root of 29966729 is about 5474.1875196233. The cubic root of 29966729 is about 310.6083406245.

The spelling of 29966729 in words is "twenty-nine million, nine hundred sixty-six thousand, seven hundred twenty-nine".