428899 has 2 divisors, whose sum is σ = 428900. Its totient is φ = 428898.

The previous prime is 428873. The next prime is 428951. The reversal of 428899 is 998824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428899 is a prime.

It is not a weakly prime, because it can be changed into another prime (428809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214449 + 214450.

It is an arithmetic number, because the mean of its divisors is an integer number (214450).

2⁴²⁸⁸⁹⁹ is an apocalyptic number.

428899 is a deficient number, since it is larger than the sum of its proper divisors (1).

428899 is an equidigital number, since it uses as much as digits as its factorization.

428899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 428899 is about 654.9038097309. The cubic root of 428899 is about 75.4139481264.

The spelling of 428899 in words is "four hundred twenty-eight thousand, eight hundred ninety-nine".