27470447929 has 2 divisors, whose sum is σ = 27470447930. Its totient is φ = 27470447928.

The previous prime is 27470447909. The next prime is 27470447957. The reversal of 27470447929 is 92974407472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18354017529 + 9116430400 = 135477^2 + 95480^2 .

It is a cyclic number.

It is not a de Polignac number, because 27470447929 - 2⁷ = 27470447801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27470447929.

It is not a weakly prime, because it can be changed into another prime (27470447909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13735223964 + 13735223965.

It is an arithmetic number, because the mean of its divisors is an integer number (13735223965).

Almost surely, 2^27470447929 is an apocalyptic number.

It is an amenable number.

27470447929 is a deficient number, since it is larger than the sum of its proper divisors (1).

27470447929 is an equidigital number, since it uses as much as digits as its factorization.

27470447929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 27470447929 in words is "twenty-seven billion, four hundred seventy million, four hundred forty-seven thousand, nine hundred twenty-nine".