427385392493 has 2 divisors, whose sum is σ = 427385392494. Its totient is φ = 427385392492.

The previous prime is 427385392333. The next prime is 427385392531. The reversal of 427385392493 is 394293583724.

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., 418321781284 + 9063611209 = 646778^2 + 95203^2 .

It is a cyclic number.

It is not a de Polignac number, because 427385392493 - 2³⁰ = 426311650669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427385398493) 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, 213692696246 + 213692696247.

It is an arithmetic number, because the mean of its divisors is an integer number (213692696247).

Almost surely, 2^427385392493 is an apocalyptic number.

It is an amenable number.

427385392493 is a deficient number, since it is larger than the sum of its proper divisors (1).

427385392493 is an equidigital number, since it uses as much as digits as its factorization.

427385392493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 59.

The spelling of 427385392493 in words is "four hundred twenty-seven billion, three hundred eighty-five million, three hundred ninety-two thousand, four hundred ninety-three".