29689669 has 2 divisors, whose sum is σ = 29689670. Its totient is φ = 29689668.

The previous prime is 29689637. The next prime is 29689697. The reversal of 29689669 is 96698692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 9529569 = 4490^2 + 3087^2 .

It is a cyclic number.

It is not a de Polignac number, because 29689669 - 2⁵ = 29689637 is a prime.

It is a super-2 number, since 2×29689669² = 1762952890659122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29689969) 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, 14844834 + 14844835.

It is an arithmetic number, because the mean of its divisors is an integer number (14844835).

Almost surely, 2^29689669 is an apocalyptic number.

It is an amenable number.

29689669 is a deficient number, since it is larger than the sum of its proper divisors (1).

29689669 is an equidigital number, since it uses as much as digits as its factorization.

29689669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 55.

The square root of 29689669 is about 5448.8227168811. The cubic root of 29689669 is about 309.6481231129.

The spelling of 29689669 in words is "twenty-nine million, six hundred eighty-nine thousand, six hundred sixty-nine".