428835005999 has 4 divisors (see below), whose sum is σ = 429966497160. Its totient is φ = 427703514840.

The previous prime is 428835005981. The next prime is 428835006043. The reversal of 428835005999 is 999500538824.

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 428835005999 - 2²⁰ = 428833957423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428835005909) 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, 565745012 + ... + 565745769.

It is an arithmetic number, because the mean of its divisors is an integer number (107491624290).

Almost surely, 2^428835005999 is an apocalyptic number.

428835005999 is a deficient number, since it is larger than the sum of its proper divisors (1131491161).

428835005999 is a wasteful number, since it uses less digits than its factorization.

428835005999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131491160.

The product of its (nonzero) digits is 27993600, while the sum is 62.

The spelling of 428835005999 in words is "four hundred twenty-eight billion, eight hundred thirty-five million, five thousand, nine hundred ninety-nine".