899999364688 has 10 divisors (see below), whose sum is σ = 1743748769114. Its totient is φ = 449999682336.

The previous prime is 899999364617. The next prime is 899999364721. The reversal of 899999364688 is 886463999998.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 639891204624 + 260108160064 = 799932^2 + 510008^2 .

It is a junction number, because it is equal to n+sod(n) for n = 899999364599 and 899999364608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28124980131 + ... + 28124980162.

Almost surely, 2^899999364688 is an apocalyptic number.

It is an amenable number.

899999364688 is a deficient number, since it is larger than the sum of its proper divisors (843749404426).

899999364688 is a wasteful number, since it uses less digits than its factorization.

899999364688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56249960301 (or 56249960295 counting only the distinct ones).

The product of its digits is 13060694016, while the sum is 88.

The spelling of 899999364688 in words is "eight hundred ninety-nine billion, nine hundred ninety-nine million, three hundred sixty-four thousand, six hundred eighty-eight".