999986000050 has 48 divisors (see below), whose sum is σ = 1912756394952. Its totient is φ = 388671782400.

The previous prime is 999986000047. The next prime is 999986000053. The reversal of 999986000050 is 50000689999.

It is a Cunningham number, because it is equal to 999993²+1.

It is an interprime number because it is at equal distance from previous prime (999986000047) and next prime (999986000053).

It can be written as a sum of positive squares in 12 ways, for example, as 1 + 999986000049 = 1^2 + 999993^2 .

It is a junction number, because it is equal to n+sod(n) for n = 999985999955 and 999986000000.

It is not an unprimeable number, because it can be changed into a prime (999986000053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1052704 + ... + 1762996.

Almost surely, 2^999986000050 is an apocalyptic number.

999986000050 is a deficient number, since it is larger than the sum of its proper divisors (912770394902).

999986000050 is a wasteful number, since it uses less digits than its factorization.

999986000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711103 (or 711098 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 999986000050 in words is "nine hundred ninety-nine billion, nine hundred eighty-six million, fifty", and thus it is an aban number.