99999950 has 48 divisors (see below), whose sum is σ = 199835424.
Its totient is φ = 37094400.
The previous prime is 99999941. The next prime is 99999959. The reversal of 99999950 is 5999999.
It is an interprime number because it is at equal distance from previous prime (99999941) and next prime (99999959).
It is a Curzon number.
It is a nialpdrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 99999950.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (99999959) 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, 59522 + ... + 61178.
It is an arithmetic number, because the mean of its divisors is an integer number (4163238).
Almost surely, 299999950 is an apocalyptic number.
99999950 is a deficient number, since it is larger than the sum of its proper divisors (99835474).
99999950 is a wasteful number, since it uses less digits than its factorization.
99999950 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1757 (or 1752 counting only the distinct ones).
The product of its (nonzero) digits is 2657205, while the sum is 59.
The square root of 99999950 is about 9999.9974999997.
The cubic root of 99999950 is about 464.1588060015.
The spelling of 99999950 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".