29681429 has 4 divisors (see below), whose sum is σ = 29732076. Its totient is φ = 29630784.

The previous prime is 29681419. The next prime is 29681453. The reversal of 29681429 is 92418692.

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 24850225 + 4831204 = 4985^2 + 2198^2 .

It is a cyclic number.

It is not a de Polignac number, because 29681429 - 2¹⁶ = 29615893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29681419) 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, 24434 + ... + 25619.

It is an arithmetic number, because the mean of its divisors is an integer number (7433019).

Almost surely, 2^29681429 is an apocalyptic number.

It is an amenable number.

29681429 is a deficient number, since it is larger than the sum of its proper divisors (50647).

29681429 is an equidigital number, since it uses as much as digits as its factorization.

29681429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50646.

The product of its digits is 62208, while the sum is 41.

The square root of 29681429 is about 5448.0665377728. The cubic root of 29681429 is about 309.6194741282.

The spelling of 29681429 in words is "twenty-nine million, six hundred eighty-one thousand, four hundred twenty-nine".