29969081 has 4 divisors (see below), whose sum is σ = 29992164. Its totient is φ = 29946000.

The previous prime is 29969063. The next prime is 29969083. The reversal of 29969081 is 18096992.

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 20611600 + 9357481 = 4540^2 + 3059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29969081 is a prime.

It is a super-2 number, since 2×29969081² = 1796291631969122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29969083) 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 3 ways as a sum of consecutive naturals, for example, 9470 + ... + 12231.

It is an arithmetic number, because the mean of its divisors is an integer number (7498041).

Almost surely, 2^29969081 is an apocalyptic number.

It is an amenable number.

29969081 is a deficient number, since it is larger than the sum of its proper divisors (23083).

29969081 is a wasteful number, since it uses less digits than its factorization.

29969081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23082.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 29969081 is about 5474.4023418086. The cubic root of 29969081 is about 310.6164666554.

The spelling of 29969081 in words is "twenty-nine million, nine hundred sixty-nine thousand, eighty-one".