9999950 has 12 divisors (see below), whose sum is σ = 18600000.
Its totient is φ = 3999960.
The previous prime is 9999943. The next prime is 9999971. The reversal of 9999950 is 599999.
It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 199999 = 9999950 / (9 + 9 + 9 + 9 + 9 + 5 + 0).
It is a nialpdrome in base 10.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99950 + ... + 100049.
It is an arithmetic number, because the mean of its divisors is an integer number (1550000).
Almost surely, 29999950 is an apocalyptic number.
9999950 is a deficient number, since it is larger than the sum of its proper divisors (8600050).
9999950 is a wasteful number, since it uses less digits than its factorization.
9999950 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 200011 (or 200006 counting only the distinct ones).
The product of its (nonzero) digits is 295245, while the sum is 50.
The square root of 9999950 is about 3162.2697544643.
The cubic root of 9999950 is about 215.4431099301.
Adding to 9999950 its sum of digits (50), we get a 7-th power (10000000 = 107).
The spelling of 9999950 in words is "nine million, nine hundred ninety-nine thousand, nine hundred fifty".