9820989929 has 4 divisors (see below), whose sum is σ = 9834499584. Its totient is φ = 9807480276.

The previous prime is 9820989901. The next prime is 9820989931. The reversal of 9820989929 is 9299890289.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9820989929 - 2³² = 5526022633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9820989989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6753737 + ... + 6755190.

It is an arithmetic number, because the mean of its divisors is an integer number (2458624896).

Almost surely, 2^9820989929 is an apocalyptic number.

It is an amenable number.

9820989929 is a deficient number, since it is larger than the sum of its proper divisors (13509655).

9820989929 is a wasteful number, since it uses less digits than its factorization.

9820989929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509654.

The product of its (nonzero) digits is 15116544, while the sum is 65.

The square root of 9820989929 is about 99100.9078111800. The cubic root of 9820989929 is about 2141.5016921423.

The spelling of 9820989929 in words is "nine billion, eight hundred twenty million, nine hundred eighty-nine thousand, nine hundred twenty-nine".