999999950 has 12 divisors (see below), whose sum is σ = 1860000000. Its totient is φ = 399999960.

The previous prime is 999999937. The next prime is 1000000007. The reversal of 999999950 is 59999999.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9999950 + ... + 10000049.

It is an arithmetic number, because the mean of its divisors is an integer number (155000000).

Almost surely, 2^999999950 is an apocalyptic number.

999999950 is a deficient number, since it is larger than the sum of its proper divisors (860000050).

999999950 is a wasteful number, since it uses less digits than its factorization.

999999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000011 (or 20000006 counting only the distinct ones).

The product of its (nonzero) digits is 23914845, while the sum is 68.

The square root of 999999950 is about 31622.7758111144. The cubic root of 999999950 is about 999.9999833333. Note that the first 4 decimals are identical.

The spelling of 999999950 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".