426891 has 4 divisors (see below), whose sum is σ = 569192. Its totient is φ = 284592.

The previous prime is 426889. The next prime is 426893. The reversal of 426891 is 198624.

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

It is an interprime number because it is at equal distance from previous prime (426889) and next prime (426893).

It is not a de Polignac number, because 426891 - 2¹ = 426889 is a prime.

It is a super-3 number, since 3×426891³ = 233384629905797913, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71146 + ... + 71151.

It is an arithmetic number, because the mean of its divisors is an integer number (142298).

2⁴²⁶⁸⁹¹ is an apocalyptic number.

426891 is a deficient number, since it is larger than the sum of its proper divisors (142301).

426891 is a wasteful number, since it uses less digits than its factorization.

426891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142300.

The product of its digits is 3456, while the sum is 30.

The square root of 426891 is about 653.3689616136. The cubic root of 426891 is about 75.2960741081.

The spelling of 426891 in words is "four hundred twenty-six thousand, eight hundred ninety-one".