427895777 has 2 divisors, whose sum is σ = 427895778. Its totient is φ = 427895776.

The previous prime is 427895761. The next prime is 427895791. The reversal of 427895777 is 777598724.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352275361 + 75620416 = 18769^2 + 8696^2 .

It is a cyclic number.

It is not a de Polignac number, because 427895777 - 2⁴ = 427895761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427895707) 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, 213947888 + 213947889.

It is an arithmetic number, because the mean of its divisors is an integer number (213947889).

Almost surely, 2^427895777 is an apocalyptic number.

It is an amenable number.

427895777 is a deficient number, since it is larger than the sum of its proper divisors (1).

427895777 is an equidigital number, since it uses as much as digits as its factorization.

427895777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6914880, while the sum is 56.

The square root of 427895777 is about 20685.6418077854. The cubic root of 427895777 is about 753.5510282481.

The spelling of 427895777 in words is "four hundred twenty-seven million, eight hundred ninety-five thousand, seven hundred seventy-seven".