999550050 has 96 divisors (see below), whose sum is σ = 2618880000. Its totient is φ = 251899200.

The previous prime is 999550039. The next prime is 999550051. The reversal of 999550050 is 50055999.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999549984 and 999550011.

It is not an unprimeable number, because it can be changed into a prime (999550051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197451 + ... + 202449.

It is an arithmetic number, because the mean of its divisors is an integer number (27280000).

Almost surely, 2^999550050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999550050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309440000).

999550050 is an abundant number, since it is smaller than the sum of its proper divisors (1619329950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999550050 is a wasteful number, since it uses less digits than its factorization.

999550050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 91125, while the sum is 42.

The square root of 999550050 is about 31615.6614670641. The cubic root of 999550050 is about 999.8499941660.

The spelling of 999550050 in words is "nine hundred ninety-nine million, five hundred fifty thousand, fifty".