29455421 has 2 divisors, whose sum is σ = 29455422. Its totient is φ = 29455420.

The previous prime is 29455409. The next prime is 29455451. The reversal of 29455421 is 12455492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26265625 + 3189796 = 5125^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 29455421 - 2¹⁸ = 29193277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29455451) 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, 14727710 + 14727711.

It is an arithmetic number, because the mean of its divisors is an integer number (14727711).

Almost surely, 2^29455421 is an apocalyptic number.

It is an amenable number.

29455421 is a deficient number, since it is larger than the sum of its proper divisors (1).

29455421 is an equidigital number, since it uses as much as digits as its factorization.

29455421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 29455421 is about 5427.2848644603. The cubic root of 29455421 is about 308.8316094977.

The spelling of 29455421 in words is "twenty-nine million, four hundred fifty-five thousand, four hundred twenty-one".