427919 has 2 divisors, whose sum is σ = 427920. Its totient is φ = 427918.

The previous prime is 427913. The next prime is 427939. The reversal of 427919 is 919724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427919 - 2¹² = 423823 is a prime.

It is a super-2 number, since 2×427919² = 366229341122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427913) 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, 213959 + 213960.

It is an arithmetic number, because the mean of its divisors is an integer number (213960).

2⁴²⁷⁹¹⁹ is an apocalyptic number.

427919 is a deficient number, since it is larger than the sum of its proper divisors (1).

427919 is an equidigital number, since it uses as much as digits as its factorization.

427919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 427919 is about 654.1551803662. The cubic root of 427919 is about 75.3564660383.

The spelling of 427919 in words is "four hundred twenty-seven thousand, nine hundred nineteen".