427447 has 2 divisors, whose sum is σ = 427448. Its totient is φ = 427446.

The previous prime is 427439. The next prime is 427451. The reversal of 427447 is 744724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427447 - 2³ = 427439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213723 + 213724.

It is an arithmetic number, because the mean of its divisors is an integer number (213724).

2⁴²⁷⁴⁴⁷ is an apocalyptic number.

427447 is a deficient number, since it is larger than the sum of its proper divisors (1).

427447 is an equidigital number, since it uses as much as digits as its factorization.

427447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6272, while the sum is 28.

The square root of 427447 is about 653.7943101618. The cubic root of 427447 is about 75.3287494709.

The spelling of 427447 in words is "four hundred twenty-seven thousand, four hundred forty-seven", and thus it is an iban number.