9799999 has 16 divisors (see below), whose sum is σ = 11427840. Its totient is φ = 8316000.

The previous prime is 9799997. The next prime is 9800003. The reversal of 9799999 is 9999979.

It is not a de Polignac number, because 9799999 - 2¹ = 9799997 is a prime.

9799999 is a modest number, since divided by 9999 gives 979 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9799997) 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 15 ways as a sum of consecutive naturals, for example, 9394 + ... + 10384.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^9799999 is an apocalyptic number.

9799999 is a deficient number, since it is larger than the sum of its proper divisors (1627841).

9799999 is a wasteful number, since it uses less digits than its factorization.

9799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its digits is 3720087, while the sum is 61.

The square root of 9799999 is about 3130.4950087806. The cubic root of 9799999 is about 213.9974888342.

It can be divided in two parts, 9 and 799999, that added together give a palindrome (800008).

The spelling of 9799999 in words is "nine million, seven hundred ninety-nine thousand, nine hundred ninety-nine".