428863 has 2 divisors, whose sum is σ = 428864. Its totient is φ = 428862.

The previous prime is 428851. The next prime is 428873. The reversal of 428863 is 368824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428863 - 2¹³ = 420671 is a prime.

It is a congruent number.

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, 214431 + 214432.

It is an arithmetic number, because the mean of its divisors is an integer number (214432).

2⁴²⁸⁸⁶³ is an apocalyptic number.

428863 is a deficient number, since it is larger than the sum of its proper divisors (1).

428863 is an equidigital number, since it uses as much as digits as its factorization.

428863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 428863 is about 654.8763242018. The cubic root of 428863 is about 75.4118380895.

The spelling of 428863 in words is "four hundred twenty-eight thousand, eight hundred sixty-three".