428843 has 2 divisors, whose sum is σ = 428844. Its totient is φ = 428842.

The previous prime is 428833. The next prime is 428851. The reversal of 428843 is 348824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428843 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (428833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214421 + 214422.

It is an arithmetic number, because the mean of its divisors is an integer number (214422).

2⁴²⁸⁸⁴³ is an apocalyptic number.

428843 is a deficient number, since it is larger than the sum of its proper divisors (1).

428843 is an equidigital number, since it uses as much as digits as its factorization.

428843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

The square root of 428843 is about 654.8610539649. The cubic root of 428843 is about 75.4106657958.

The spelling of 428843 in words is "four hundred twenty-eight thousand, eight hundred forty-three".