9990495 has 12 divisors (see below), whose sum is σ = 17316936. Its totient is φ = 5328240.

The previous prime is 9990493. The next prime is 9990499. The reversal of 9990495 is 5940999.

It is a happy number.

It is not a de Polignac number, because 9990495 - 2¹ = 9990493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 222011 = 9990495 / (9 + 9 + 9 + 0 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 9990495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110961 + ... + 111050.

It is an arithmetic number, because the mean of its divisors is an integer number (1443078).

Almost surely, 2^9990495 is an apocalyptic number.

9990495 is a deficient number, since it is larger than the sum of its proper divisors (7326441).

9990495 is a wasteful number, since it uses less digits than its factorization.

9990495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222022 (or 222019 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 9990495 is about 3160.7744304205. The cubic root of 9990495 is about 215.3751876924.

It can be divided in two parts, 99904 and 95, that added together give a palindrome (99999).

The spelling of 9990495 in words is "nine million, nine hundred ninety thousand, four hundred ninety-five".