424891 has 2 divisors, whose sum is σ = 424892. Its totient is φ = 424890.

The previous prime is 424889. The next prime is 424903. The reversal of 424891 is 198424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424891 - 2¹ = 424889 is a prime.

Together with 424889, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (424811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212445 + 212446.

It is an arithmetic number, because the mean of its divisors is an integer number (212446).

2⁴²⁴⁸⁹¹ is an apocalyptic number.

424891 is a deficient number, since it is larger than the sum of its proper divisors (1).

424891 is an equidigital number, since it uses as much as digits as its factorization.

424891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 424891 is about 651.8366359756. The cubic root of 424891 is about 75.1783017034.

The spelling of 424891 in words is "four hundred twenty-four thousand, eight hundred ninety-one".