29143947 has 8 divisors (see below), whose sum is σ = 44409856. Its totient is φ = 16653672.

The previous prime is 29143913. The next prime is 29143949. The reversal of 29143947 is 74934192.

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

It is not a de Polignac number, because 29143947 - 2¹¹ = 29141899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29143949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693883 + ... + 693924.

It is an arithmetic number, because the mean of its divisors is an integer number (5551232).

Almost surely, 2^29143947 is an apocalyptic number.

29143947 is a deficient number, since it is larger than the sum of its proper divisors (15265909).

29143947 is a wasteful number, since it uses less digits than its factorization.

29143947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387817.

The product of its digits is 54432, while the sum is 39.

The square root of 29143947 is about 5398.5134064852. The cubic root of 29143947 is about 307.7391780506.

The spelling of 29143947 in words is "twenty-nine million, one hundred forty-three thousand, nine hundred forty-seven".