29689841 has 4 divisors (see below), whose sum is σ = 29709300. Its totient is φ = 29670384.

The previous prime is 29689819. The next prime is 29689843. The reversal of 29689841 is 14898692.

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 24049216 + 5640625 = 4904^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 29689841 - 2²² = 25495537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29689843) 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, 7226 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (7427325).

Almost surely, 2^29689841 is an apocalyptic number.

It is an amenable number.

29689841 is a deficient number, since it is larger than the sum of its proper divisors (19459).

29689841 is a wasteful number, since it uses less digits than its factorization.

29689841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19458.

The product of its digits is 248832, while the sum is 47.

The square root of 29689841 is about 5448.8385000842. The cubic root of 29689841 is about 309.6487210692.

The spelling of 29689841 in words is "twenty-nine million, six hundred eighty-nine thousand, eight hundred forty-one".