29669989 has 2 divisors, whose sum is σ = 29669990. Its totient is φ = 29669988.

The previous prime is 29669971. The next prime is 29669993. The reversal of 29669989 is 98996692.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23444964 + 6225025 = 4842^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 29669989 - 2¹⁷ = 29538917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29669999) 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 as a sum of consecutive naturals, namely, 14834994 + 14834995.

It is an arithmetic number, because the mean of its divisors is an integer number (14834995).

Almost surely, 2^29669989 is an apocalyptic number.

It is an amenable number.

29669989 is a deficient number, since it is larger than the sum of its proper divisors (1).

29669989 is an equidigital number, since it uses as much as digits as its factorization.

29669989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 58.

The square root of 29669989 is about 5447.0165228316. The cubic root of 29669989 is about 309.5796905321.

The spelling of 29669989 in words is "twenty-nine million, six hundred sixty-nine thousand, nine hundred eighty-nine".