29694221 has 2 divisors, whose sum is σ = 29694222. Its totient is φ = 29694220.

The previous prime is 29694191. The next prime is 29694233. The reversal of 29694221 is 12249692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22458121 + 7236100 = 4739^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 29694221 - 2¹⁸ = 29432077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29694281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14847110 + 14847111.

It is an arithmetic number, because the mean of its divisors is an integer number (14847111).

Almost surely, 2^29694221 is an apocalyptic number.

It is an amenable number.

29694221 is a deficient number, since it is larger than the sum of its proper divisors (1).

29694221 is an equidigital number, since it uses as much as digits as its factorization.

29694221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 29694221 is about 5449.2404057813. The cubic root of 29694221 is about 309.6639473179.

The spelling of 29694221 in words is "twenty-nine million, six hundred ninety-four thousand, two hundred twenty-one".