428843335399 has 4 divisors (see below), whose sum is σ = 435243982264. Its totient is φ = 422442688536.

The previous prime is 428843335379. The next prime is 428843335421. The reversal of 428843335399 is 993533348824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428843335399 - 2¹¹ = 428843333351 is a prime.

It is a super-2 number, since 2×428843335399² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428843335369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200323332 + ... + 3200323465.

It is an arithmetic number, because the mean of its divisors is an integer number (108810995566).

Almost surely, 2^428843335399 is an apocalyptic number.

428843335399 is a deficient number, since it is larger than the sum of its proper divisors (6400646865).

428843335399 is an equidigital number, since it uses as much as digits as its factorization.

428843335399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400646864.

The product of its digits is 67184640, while the sum is 61.

The spelling of 428843335399 in words is "four hundred twenty-eight billion, eight hundred forty-three million, three hundred thirty-five thousand, three hundred ninety-nine".