9902899 has 4 divisors (see below), whose sum is σ = 9935464. Its totient is φ = 9870336.

The previous prime is 9902897. The next prime is 9902909. The reversal of 9902899 is 9982099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9902899 - 2¹ = 9902897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (9902897) 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 3 ways as a sum of consecutive naturals, for example, 15822 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (2483866).

Almost surely, 2^9902899 is an apocalyptic number.

9902899 is a deficient number, since it is larger than the sum of its proper divisors (32565).

9902899 is a wasteful number, since it uses less digits than its factorization.

9902899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32564.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 9902899 is about 3146.8871921313. The cubic root of 9902899 is about 214.7438738374.

It can be divided in two parts, 9902 and 899, that added together give a palindrome (10801).

The spelling of 9902899 in words is "nine million, nine hundred two thousand, eight hundred ninety-nine".