427457287 has 2 divisors, whose sum is σ = 427457288. Its totient is φ = 427457286.

The previous prime is 427457257. The next prime is 427457297. The reversal of 427457287 is 782754724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427457287 - 2⁷ = 427457159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427457207) 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, 213728643 + 213728644.

It is an arithmetic number, because the mean of its divisors is an integer number (213728644).

Almost surely, 2^427457287 is an apocalyptic number.

427457287 is a deficient number, since it is larger than the sum of its proper divisors (1).

427457287 is an equidigital number, since it uses as much as digits as its factorization.

427457287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 878080, while the sum is 46.

The square root of 427457287 is about 20675.0401934313. The cubic root of 427457287 is about 753.2935375685.

The spelling of 427457287 in words is "four hundred twenty-seven million, four hundred fifty-seven thousand, two hundred eighty-seven".