427679971 has 2 divisors, whose sum is σ = 427679972. Its totient is φ = 427679970.

The previous prime is 427679957. The next prime is 427679981. The reversal of 427679971 is 179976724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427679971 - 2⁹ = 427679459 is a prime.

It is not a weakly prime, because it can be changed into another prime (427679981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213839985 + 213839986.

It is an arithmetic number, because the mean of its divisors is an integer number (213839986).

Almost surely, 2^427679971 is an apocalyptic number.

427679971 is a deficient number, since it is larger than the sum of its proper divisors (1).

427679971 is an equidigital number, since it uses as much as digits as its factorization.

427679971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 52.

The square root of 427679971 is about 20680.4248263908. The cubic root of 427679971 is about 753.4243243570.

The spelling of 427679971 in words is "four hundred twenty-seven million, six hundred seventy-nine thousand, nine hundred seventy-one".