9990396 has 36 divisors (see below), whose sum is σ = 27197352. Its totient is φ = 3073824.

The previous prime is 9990389. The next prime is 9990403. The reversal of 9990396 is 6930999.

9990396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9990389) and next prime (9990403).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10206 + ... + 11141.

It is an arithmetic number, because the mean of its divisors is an integer number (755482).

Almost surely, 2^9990396 is an apocalyptic number.

It is an amenable number.

9990396 is an abundant number, since it is smaller than the sum of its proper divisors (17206956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9990396 is a wasteful number, since it uses less digits than its factorization.

9990396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21370 (or 21365 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 9990396 is about 3160.7587696628. The cubic root of 9990396 is about 215.3744762757.

It can be divided in two parts, 99903 and 96, that added together give a palindrome (99999).

The spelling of 9990396 in words is "nine million, nine hundred ninety thousand, three hundred ninety-six".