29689943 has 2 divisors, whose sum is σ = 29689944. Its totient is φ = 29689942.

The previous prime is 29689931. The next prime is 29689967. The reversal of 29689943 is 34998692.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29689943 - 2¹⁴ = 29673559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29689891 and 29689900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29689993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14844971 + 14844972.

It is an arithmetic number, because the mean of its divisors is an integer number (14844972).

Almost surely, 2^29689943 is an apocalyptic number.

29689943 is a deficient number, since it is larger than the sum of its proper divisors (1).

29689943 is an equidigital number, since it uses as much as digits as its factorization.

29689943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 29689943 is about 5448.8478598691. The cubic root of 29689943 is about 309.6490756701.

The spelling of 29689943 in words is "twenty-nine million, six hundred eighty-nine thousand, nine hundred forty-three".