428555439001 has 4 divisors (see below), whose sum is σ = 429634924132. Its totient is φ = 427475953872.

The previous prime is 428555438989. The next prime is 428555439043. The reversal of 428555439001 is 100934555824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 106879301776 + 321676137225 = 326924^2 + 567165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428555439001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428555439101) 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, 539741970 + ... + 539742763.

It is an arithmetic number, because the mean of its divisors is an integer number (107408731033).

Almost surely, 2^428555439001 is an apocalyptic number.

It is an amenable number.

428555439001 is a deficient number, since it is larger than the sum of its proper divisors (1079485131).

428555439001 is a wasteful number, since it uses less digits than its factorization.

428555439001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079485130.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 428555439001 in words is "four hundred twenty-eight billion, five hundred fifty-five million, four hundred thirty-nine thousand, one".