426919 has 2 divisors, whose sum is σ = 426920. Its totient is φ = 426918.

The previous prime is 426917. The next prime is 426931. The reversal of 426919 is 919624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426919 - 2¹ = 426917 is a prime.

It is a super-2 number, since 2×426919² = 364519665122, which contains 22 as substring.

Together with 426917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213459 + 213460.

It is an arithmetic number, because the mean of its divisors is an integer number (213460).

2⁴²⁶⁹¹⁹ is an apocalyptic number.

426919 is a deficient number, since it is larger than the sum of its proper divisors (1).

426919 is an equidigital number, since it uses as much as digits as its factorization.

426919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 426919 is about 653.3903886652. The cubic root of 426919 is about 75.2977203081.

The spelling of 426919 in words is "four hundred twenty-six thousand, nine hundred nineteen".