9825999 has 8 divisors (see below), whose sum is σ = 13140480. Its totient is φ = 6531096.

The previous prime is 9825997. The next prime is 9826001. The reversal of 9825999 is 9995289.

9825999 is digitally balanced in base 3, 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 (9825997) and next prime (9826001).

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

It is not a de Polignac number, because 9825999 - 2¹ = 9825997 is a prime.

It is an Ulam number.

9825999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9825997) 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, 3679 + ... + 5760.

It is an arithmetic number, because the mean of its divisors is an integer number (1642560).

Almost surely, 2^9825999 is an apocalyptic number.

9825999 is a deficient number, since it is larger than the sum of its proper divisors (3314481).

9825999 is a wasteful number, since it uses less digits than its factorization.

9825999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789.

The product of its digits is 524880, while the sum is 51.

The square root of 9825999 is about 3134.6449559719. The cubic root of 9825999 is about 214.1865712161.

The spelling of 9825999 in words is "nine million, eight hundred twenty-five thousand, nine hundred ninety-nine".