9990799 has 8 divisors (see below), whose sum is σ = 12296480. Its totient is φ = 7904736.

The previous prime is 9990797. The next prime is 9990803. The reversal of 9990799 is 9970999.

9990799 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9990799 - 2¹ = 9990797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990797) 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, 54804 + ... + 54985.

It is an arithmetic number, because the mean of its divisors is an integer number (1537060).

Almost surely, 2^9990799 is an apocalyptic number.

9990799 is a deficient number, since it is larger than the sum of its proper divisors (2305681).

9990799 is a wasteful number, since it uses less digits than its factorization.

9990799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109809.

The product of its (nonzero) digits is 413343, while the sum is 52.

The square root of 9990799 is about 3160.8225195351. The cubic root of 9990799 is about 215.3773722152.

It can be divided in two parts, 9990 and 799, that multiplied together give a triangular number (7982010 = T₃₉₉₅).

The spelling of 9990799 in words is "nine million, nine hundred ninety thousand, seven hundred ninety-nine".