428440390559 has 8 divisors (see below), whose sum is σ = 453521505360. Its totient is φ = 404046429696.

The previous prime is 428440390537. The next prime is 428440390601. The reversal of 428440390559 is 955093044824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428440390559 is a prime.

It is a super-2 number, since 2×428440390559² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428440390559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428440390159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171787202 + ... + 171789695.

It is an arithmetic number, because the mean of its divisors is an integer number (56690188170).

Almost surely, 2^428440390559 is an apocalyptic number.

428440390559 is a deficient number, since it is larger than the sum of its proper divisors (25081114801).

428440390559 is a wasteful number, since it uses less digits than its factorization.

428440390559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343576969.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 428440390559 in words is "four hundred twenty-eight billion, four hundred forty million, three hundred ninety thousand, five hundred fifty-nine".