29870689 has 2 divisors, whose sum is σ = 29870690. Its totient is φ = 29870688.

The previous prime is 29870671. The next prime is 29870693. The reversal of 29870689 is 98607892.

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., 24920064 + 4950625 = 4992^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 29870689 - 2⁵ = 29870657 is a prime.

It is a super-2 number, since 2×29870689² = 1784516122669442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29870189) 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, 14935344 + 14935345.

It is an arithmetic number, because the mean of its divisors is an integer number (14935345).

Almost surely, 2^29870689 is an apocalyptic number.

It is an amenable number.

29870689 is a deficient number, since it is larger than the sum of its proper divisors (1).

29870689 is an equidigital number, since it uses as much as digits as its factorization.

29870689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 29870689 is about 5465.4084019403. The cubic root of 29870689 is about 310.2761638956.

The spelling of 29870689 in words is "twenty-nine million, eight hundred seventy thousand, six hundred eighty-nine".