9849999 has 8 divisors (see below), whose sum is σ = 13824640. Its totient is φ = 6221016.

The previous prime is 9849989. The next prime is 9850007. The reversal of 9849999 is 9999489.

9849999 is digitally balanced in base 2 and base 4, 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 9849999 - 2¹² = 9845903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 172807 = 9849999 / (9 + 8 + 4 + 9 + 9 + 9 + 9).

It is an Ulam number.

It is a Duffinian number.

9849999 is a modest number, since divided by 9999 gives 984 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9849979) 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, 86347 + ... + 86460.

It is an arithmetic number, because the mean of its divisors is an integer number (1728080).

Almost surely, 2^9849999 is an apocalyptic number.

9849999 is a deficient number, since it is larger than the sum of its proper divisors (3974641).

9849999 is a wasteful number, since it uses less digits than its factorization.

9849999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172829.

The product of its digits is 1889568, while the sum is 57.

The square root of 9849999 is about 3138.4708059818. The cubic root of 9849999 is about 214.3608129794.

The spelling of 9849999 in words is "nine million, eight hundred forty-nine thousand, nine hundred ninety-nine".