999950001 has 16 divisors (see below), whose sum is σ = 1393428096.
Its totient is φ = 636644096.
The previous prime is 999949997. The next prime is 999950033. The reversal of 999950001 is 100059999.
999950001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a cyclic number.
It is not a de Polignac number, because 999950001 - 22 = 999949997 is a prime.
It is not an unprimeable number, because it can be changed into a prime (999950071) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33961 + ... + 56153.
It is an arithmetic number, because the mean of its divisors is an integer number (87089256).
Almost surely, 2999950001 is an apocalyptic number.
999950001 is the 20000-th centered pentagonal number.
It is an amenable number.
999950001 is a deficient number, since it is larger than the sum of its proper divisors (393478095).
999950001 is a wasteful number, since it uses less digits than its factorization.
999950001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22872.
The product of its (nonzero) digits is 32805, while the sum is 42.
The square root of 999950001 is about 31621.9860381982.
The cubic root of 999950001 is about 999.9833333889.
The spelling of 999950001 in words is "nine hundred ninety-nine million, nine hundred fifty thousand, one".