428891299 has 2 divisors, whose sum is σ = 428891300. Its totient is φ = 428891298.

The previous prime is 428891291. The next prime is 428891329. The reversal of 428891299 is 992198824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428891299 - 2³ = 428891291 is a prime.

It is not a weakly prime, because it can be changed into another prime (428891291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214445649 + 214445650.

It is an arithmetic number, because the mean of its divisors is an integer number (214445650).

Almost surely, 2^428891299 is an apocalyptic number.

428891299 is a deficient number, since it is larger than the sum of its proper divisors (1).

428891299 is an equidigital number, since it uses as much as digits as its factorization.

428891299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 52.

The square root of 428891299 is about 20709.6909440967. The cubic root of 428891299 is about 754.1349676423.

The spelling of 428891299 in words is "four hundred twenty-eight million, eight hundred ninety-one thousand, two hundred ninety-nine".