427290471889 has 2 divisors, whose sum is σ = 427290471890. Its totient is φ = 427290471888.

The previous prime is 427290471877. The next prime is 427290471947. The reversal of 427290471889 is 988174092724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368819363025 + 58471108864 = 607305^2 + 241808^2 .

It is a cyclic number.

It is not a de Polignac number, because 427290471889 - 2¹¹ = 427290469841 is a prime.

It is not a weakly prime, because it can be changed into another prime (427290571889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213645235944 + 213645235945.

It is an arithmetic number, because the mean of its divisors is an integer number (213645235945).

Almost surely, 2^427290471889 is an apocalyptic number.

It is an amenable number.

427290471889 is a deficient number, since it is larger than the sum of its proper divisors (1).

427290471889 is an equidigital number, since it uses as much as digits as its factorization.

427290471889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 427290471889 in words is "four hundred twenty-seven billion, two hundred ninety million, four hundred seventy-one thousand, eight hundred eighty-nine".