9990134902 has 16 divisors (see below), whose sum is σ = 16789318992. Its totient is φ = 4418241120.

The previous prime is 9990134827. The next prime is 9990134909. The reversal of 9990134902 is 2094310999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990134909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6135633 + ... + 6137260.

It is an arithmetic number, because the mean of its divisors is an integer number (1049332437).

Almost surely, 2^9990134902 is an apocalyptic number.

9990134902 is a deficient number, since it is larger than the sum of its proper divisors (6799184090).

9990134902 is a wasteful number, since it uses less digits than its factorization.

9990134902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272943.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 9990134902 is about 99950.6623389760. The cubic root of 9990134902 is about 2153.7259999591.

The spelling of 9990134902 in words is "nine billion, nine hundred ninety million, one hundred thirty-four thousand, nine hundred two".