9990236 has 12 divisors (see below), whose sum is σ = 17744328. Its totient is φ = 4920432.

The previous prime is 9990221. The next prime is 9990251. The reversal of 9990236 is 6320999.

It is an interprime number because it is at equal distance from previous prime (9990221) and next prime (9990251).

It is a d-powerful number, because it can be written as 9 + 9³ + 9⁴ + 0 + 2²³ + 3¹³ + 6 .

It is a self number, because there is not a number n which added to its sum of digits gives 9990236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18371 + ... + 18906.

It is an arithmetic number, because the mean of its divisors is an integer number (1478694).

Almost surely, 2^9990236 is an apocalyptic number.

It is an amenable number.

9990236 is a deficient number, since it is larger than the sum of its proper divisors (7754092).

9990236 is a wasteful number, since it uses less digits than its factorization.

9990236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37348 (or 37346 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 9990236 is about 3160.7334591832. The cubic root of 9990236 is about 215.3733265015.

The spelling of 9990236 in words is "nine million, nine hundred ninety thousand, two hundred thirty-six".