29969971 has 8 divisors (see below), whose sum is σ = 30920144. Its totient is φ = 29034720.

The previous prime is 29969969. The next prime is 29969977. The reversal of 29969971 is 17996992.

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

It is a cyclic number.

It is not a de Polignac number, because 29969971 - 2¹ = 29969969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29969977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (3865018).

Almost surely, 2^29969971 is an apocalyptic number.

29969971 is a deficient number, since it is larger than the sum of its proper divisors (950173).

29969971 is an equidigital number, since it uses as much as digits as its factorization.

29969971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461.

The product of its digits is 551124, while the sum is 52.

The square root of 29969971 is about 5474.4836286174. The cubic root of 29969971 is about 310.6195414457.

The spelling of 29969971 in words is "twenty-nine million, nine hundred sixty-nine thousand, nine hundred seventy-one".