29431229 has 2 divisors, whose sum is σ = 29431230. Its totient is φ = 29431228.

The previous prime is 29431217. The next prime is 29431249. The reversal of 29431229 is 92213492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 3523129 = 5090^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 29431229 - 2¹² = 29427133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29431195 and 29431204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29431249) 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, 14715614 + 14715615.

It is an arithmetic number, because the mean of its divisors is an integer number (14715615).

Almost surely, 2^29431229 is an apocalyptic number.

It is an amenable number.

29431229 is a deficient number, since it is larger than the sum of its proper divisors (1).

29431229 is an equidigital number, since it uses as much as digits as its factorization.

29431229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 29431229 is about 5425.0556679172. The cubic root of 29431229 is about 308.7470376218.

The spelling of 29431229 in words is "twenty-nine million, four hundred thirty-one thousand, two hundred twenty-nine".