426889 has 2 divisors, whose sum is σ = 426890. Its totient is φ = 426888.

The previous prime is 426871. The next prime is 426893. The reversal of 426889 is 988624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233289 + 193600 = 483^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 426889 - 2⁷ = 426761 is a prime.

It is a super-3 number, since 3×426889³ = 233381349674500107, which contains 333 as substring.

It is a Chen prime.

426889 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (426859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213444 + 213445.

It is an arithmetic number, because the mean of its divisors is an integer number (213445).

2⁴²⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

426889 is a deficient number, since it is larger than the sum of its proper divisors (1).

426889 is an equidigital number, since it uses as much as digits as its factorization.

426889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 426889 is about 653.3674310830. The cubic root of 426889 is about 75.2959565196.

The spelling of 426889 in words is "four hundred twenty-six thousand, eight hundred eighty-nine".