426847 has 4 divisors (see below), whose sum is σ = 430336. Its totient is φ = 423360.

The previous prime is 426841. The next prime is 426859. The reversal of 426847 is 748624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426847 is a prime.

It is a super-3 number, since 3×426847³ = 233312471917042269, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (107584).

2⁴²⁶⁸⁴⁷ is an apocalyptic number.

426847 is a deficient number, since it is larger than the sum of its proper divisors (3489).

426847 is a wasteful number, since it uses less digits than its factorization.

426847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488.

The product of its digits is 10752, while the sum is 31.

The square root of 426847 is about 653.3352891127. The cubic root of 426847 is about 75.2934870768.

It can be divided in two parts, 42 and 6847, that added together give a square (6889 = 83²).

The spelling of 426847 in words is "four hundred twenty-six thousand, eight hundred forty-seven".