9990601 has 4 divisors (see below), whose sum is σ = 9997252. Its totient is φ = 9983952.

The previous prime is 9990569. The next prime is 9990653. The reversal of 9990601 is 1060999.

It is a happy number.

9990601 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1060999 = 317 ⋅3347.

It can be written as a sum of positive squares in 2 ways, for example, as 7557001 + 2433600 = 2749^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 9990601 - 2⁵ = 9990569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9990661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 115 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (2499313).

Almost surely, 2^9990601 is an apocalyptic number.

It is an amenable number.

9990601 is a deficient number, since it is larger than the sum of its proper divisors (6651).

9990601 is a wasteful number, since it uses less digits than its factorization.

9990601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6650.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 9990601 is about 3160.7911984185. The cubic root of 9990601 is about 215.3759494060.

The spelling of 9990601 in words is "nine million, nine hundred ninety thousand, six hundred one".