9929902 has 4 divisors (see below), whose sum is σ = 14894856. Its totient is φ = 4964950.

The previous prime is 9929893. The next prime is 9929903. The reversal of 9929902 is 2099299.

9929902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9929903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2482474 + ... + 2482477.

It is an arithmetic number, because the mean of its divisors is an integer number (3723714).

Almost surely, 2^9929902 is an apocalyptic number.

9929902 is a deficient number, since it is larger than the sum of its proper divisors (4964954).

9929902 is a wasteful number, since it uses less digits than its factorization.

9929902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964953.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 9929902 is about 3151.1747015994. The cubic root of 9929902 is about 214.9388829346.

The spelling of 9929902 in words is "nine million, nine hundred twenty-nine thousand, nine hundred two".