9990195 has 8 divisors (see below), whose sum is σ = 15984336. Its totient is φ = 5328096.

The previous prime is 9990193. The next prime is 9990209. The reversal of 9990195 is 5910999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9990195 - 2¹ = 9990193 is a prime.

It is a super-2 number, since 2×9990195² = 199607992276050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9990193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332992 + ... + 333021.

It is an arithmetic number, because the mean of its divisors is an integer number (1998042).

Almost surely, 2^9990195 is an apocalyptic number.

9990195 is a deficient number, since it is larger than the sum of its proper divisors (5994141).

9990195 is a wasteful number, since it uses less digits than its factorization.

9990195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666021.

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 9990195 is about 3160.7269733402. The cubic root of 9990195 is about 215.3730318698.

The spelling of 9990195 in words is "nine million, nine hundred ninety thousand, one hundred ninety-five".