426289 has 4 divisors (see below), whose sum is σ = 429300. Its totient is φ = 423280.

The previous prime is 426287. The next prime is 426301. The reversal of 426289 is 982624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134689 + 291600 = 367^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 426289 - 2¹ = 426287 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4⁹ + 2¹⁵ + 2¹⁷ + 6³ + 8 + 9² .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426289.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (107325).

2⁴²⁶²⁸⁹ is an apocalyptic number.

It is an amenable number.

426289 is a deficient number, since it is larger than the sum of its proper divisors (3011).

426289 is a wasteful number, since it uses less digits than its factorization.

426289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010.

The product of its digits is 6912, while the sum is 31.

The square root of 426289 is about 652.9081099205. The cubic root of 426289 is about 75.2606633822.

The spelling of 426289 in words is "four hundred twenty-six thousand, two hundred eighty-nine".