427728985927 has 2 divisors, whose sum is σ = 427728985928. Its totient is φ = 427728985926.

The previous prime is 427728985909. The next prime is 427728985951. The reversal of 427728985927 is 729589827724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427728985927 - 2¹¹ = 427728983879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427728985907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213864492963 + 213864492964.

It is an arithmetic number, because the mean of its divisors is an integer number (213864492964).

Almost surely, 2^427728985927 is an apocalyptic number.

427728985927 is a deficient number, since it is larger than the sum of its proper divisors (1).

427728985927 is an equidigital number, since it uses as much as digits as its factorization.

427728985927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 284497920, while the sum is 70.

The spelling of 427728985927 in words is "four hundred twenty-seven billion, seven hundred twenty-eight million, nine hundred eighty-five thousand, nine hundred twenty-seven".