29947427 has 2 divisors, whose sum is σ = 29947428. Its totient is φ = 29947426.

The previous prime is 29947381. The next prime is 29947433. The reversal of 29947427 is 72474992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29947427 - 2¹⁴ = 29931043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29947487) 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, 14973713 + 14973714.

It is an arithmetic number, because the mean of its divisors is an integer number (14973714).

Almost surely, 2^29947427 is an apocalyptic number.

29947427 is a deficient number, since it is larger than the sum of its proper divisors (1).

29947427 is an equidigital number, since it uses as much as digits as its factorization.

29947427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 29947427 is about 5472.4242342859. The cubic root of 29947427 is about 310.5416372050.

The spelling of 29947427 in words is "twenty-nine million, nine hundred forty-seven thousand, four hundred twenty-seven".