9920939169 has 8 divisors (see below), whose sum is σ = 14006031840. Its totient is φ = 6224902976.

The previous prime is 9920939153. The next prime is 9920939177. The reversal of 9920939169 is 9619390299.

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

It is a cyclic number.

It is not a de Polignac number, because 9920939169 - 2⁴ = 9920939153 is a prime.

It is a super-2 number, since 2×9920939169² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9920939569) 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, 97264059 + ... + 97264160.

It is an arithmetic number, because the mean of its divisors is an integer number (1750753980).

Almost surely, 2^9920939169 is an apocalyptic number.

It is an amenable number.

9920939169 is a deficient number, since it is larger than the sum of its proper divisors (4085092671).

9920939169 is a wasteful number, since it uses less digits than its factorization.

9920939169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194528239.

The product of its (nonzero) digits is 2125764, while the sum is 57.

The square root of 9920939169 is about 99603.9114141608. The cubic root of 9920939169 is about 2148.7419479075.

The spelling of 9920939169 in words is "nine billion, nine hundred twenty million, nine hundred thirty-nine thousand, one hundred sixty-nine".