428469959 has 2 divisors, whose sum is σ = 428469960. Its totient is φ = 428469958.

The previous prime is 428469929. The next prime is 428470033. The reversal of 428469959 is 959964824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428469959 - 2²⁰ = 427421383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428469919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214234979 + 214234980.

It is an arithmetic number, because the mean of its divisors is an integer number (214234980).

Almost surely, 2^428469959 is an apocalyptic number.

428469959 is a deficient number, since it is larger than the sum of its proper divisors (1).

428469959 is an equidigital number, since it uses as much as digits as its factorization.

428469959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 56.

The square root of 428469959 is about 20699.5159122140. The cubic root of 428469959 is about 753.8879343141.

The spelling of 428469959 in words is "four hundred twenty-eight million, four hundred sixty-nine thousand, nine hundred fifty-nine".