428487924889 has 4 divisors (see below), whose sum is σ = 428492882560. Its totient is φ = 428482967220.

The previous prime is 428487924881. The next prime is 428487924913. The reversal of 428487924889 is 988429784824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428487924889 - 2³ = 428487924881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428487924881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2346849 + ... + 2522830.

It is an arithmetic number, because the mean of its divisors is an integer number (107123220640).

Almost surely, 2^428487924889 is an apocalyptic number.

It is an amenable number.

428487924889 is a deficient number, since it is larger than the sum of its proper divisors (4957671).

428487924889 is an equidigital number, since it uses as much as digits as its factorization.

428487924889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4957670.

The product of its digits is 594542592, while the sum is 73.

The spelling of 428487924889 in words is "four hundred twenty-eight billion, four hundred eighty-seven million, nine hundred twenty-four thousand, eight hundred eighty-nine".