9990950 has 12 divisors (see below), whose sum is σ = 18583260. Its totient is φ = 3996360.

The previous prime is 9990949. The next prime is 9990961. The reversal of 9990950 is 590999.

It is a junction number, because it is equal to n+sod(n) for n = 9990898 and 9990907.

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, 99860 + ... + 99959.

It is an arithmetic number, because the mean of its divisors is an integer number (1548605).

Almost surely, 2^9990950 is an apocalyptic number.

9990950 is a deficient number, since it is larger than the sum of its proper divisors (8592310).

9990950 is a wasteful number, since it uses less digits than its factorization.

9990950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199831 (or 199826 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 9990950 is about 3160.8464056325. The cubic root of 9990950 is about 215.3784572742.

The spelling of 9990950 in words is "nine million, nine hundred ninety thousand, nine hundred fifty".