29941861 has 2 divisors, whose sum is σ = 29941862. Its totient is φ = 29941860.

The previous prime is 29941859. The next prime is 29941897. The reversal of 29941861 is 16814992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22268961 + 7672900 = 4719^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 29941861 - 2¹ = 29941859 is a prime.

Together with 29941859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29941801) 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, 14970930 + 14970931.

It is an arithmetic number, because the mean of its divisors is an integer number (14970931).

Almost surely, 2^29941861 is an apocalyptic number.

It is an amenable number.

29941861 is a deficient number, since it is larger than the sum of its proper divisors (1).

29941861 is an equidigital number, since it uses as much as digits as its factorization.

29941861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 29941861 is about 5471.9156608998. The cubic root of 29941861 is about 310.5223970229.

The spelling of 29941861 in words is "twenty-nine million, nine hundred forty-one thousand, eight hundred sixty-one".