999950 has 24 divisors (see below), whose sum is σ = 2126352.
Its totient is φ = 342720.
The previous prime is 999931. The next prime is 999953. The reversal of 999950 is 59999.
It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.
It is a nialpdrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 999898 and 999907.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (999953) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079 + ... + 1778.
It is an arithmetic number, because the mean of its divisors is an integer number (88598).
2999950 is an apocalyptic number.
999950 is an abundant number, since it is smaller than the sum of its proper divisors (1126402).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999950 is a wasteful number, since it uses less digits than its factorization.
999950 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2876 (or 2871 counting only the distinct ones).
The product of its (nonzero) digits is 32805, while the sum is 41.
The square root of 999950 is about 999.9749996875.
The cubic root of 999950 is about 99.9983333056.
The spelling of 999950 in words is "nine hundred ninety-nine thousand, nine hundred fifty".