427428539 has 2 divisors, whose sum is σ = 427428540. Its totient is φ = 427428538.

The previous prime is 427428511. The next prime is 427428553. The reversal of 427428539 is 935824724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427428539 - 2⁸ = 427428283 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427428539.

It is not a weakly prime, because it can be changed into another prime (427428439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213714269 + 213714270.

It is an arithmetic number, because the mean of its divisors is an integer number (213714270).

Almost surely, 2^427428539 is an apocalyptic number.

427428539 is a deficient number, since it is larger than the sum of its proper divisors (1).

427428539 is an equidigital number, since it uses as much as digits as its factorization.

427428539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 427428539 is about 20674.3449473012. The cubic root of 427428539 is about 753.2766499801.

The spelling of 427428539 in words is "four hundred twenty-seven million, four hundred twenty-eight thousand, five hundred thirty-nine".