428597889866 has 8 divisors (see below), whose sum is σ = 644206198464. Its totient is φ = 213862490380.

The previous prime is 428597889857. The next prime is 428597889871. The reversal of 428597889866 is 668988795824.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218226050 + ... + 218228013.

It is an arithmetic number, because the mean of its divisors is an integer number (80525774808).

Almost surely, 2^428597889866 is an apocalyptic number.

428597889866 is a deficient number, since it is larger than the sum of its proper divisors (215608308598).

428597889866 is a wasteful number, since it uses less digits than its factorization.

428597889866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436454556.

The product of its digits is 3344302080, while the sum is 80.

The spelling of 428597889866 in words is "four hundred twenty-eight billion, five hundred ninety-seven million, eight hundred eighty-nine thousand, eight hundred sixty-six".