29894321 has 2 divisors, whose sum is σ = 29894322. Its totient is φ = 29894320.

The previous prime is 29894309. The next prime is 29894327. The reversal of 29894321 is 12349892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 2436721 = 5240^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 29894321 - 2⁶ = 29894257 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (29894327) 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, 14947160 + 14947161.

It is an arithmetic number, because the mean of its divisors is an integer number (14947161).

Almost surely, 2^29894321 is an apocalyptic number.

It is an amenable number.

29894321 is a deficient number, since it is larger than the sum of its proper divisors (1).

29894321 is an equidigital number, since it uses as much as digits as its factorization.

29894321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 29894321 is about 5467.5699355381. The cubic root of 29894321 is about 310.3579666452.

The spelling of 29894321 in words is "twenty-nine million, eight hundred ninety-four thousand, three hundred twenty-one".