9992817690 has 64 divisors (see below), whose sum is σ = 24585814656. Its totient is φ = 2598365952.

The previous prime is 9992817629. The next prime is 9992817691. The reversal of 9992817690 is 967182999.

It is a happy number.

It is a super-2 number, since 2×9992817690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9992817691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239892 + ... + 278448.

It is an arithmetic number, because the mean of its divisors is an integer number (384153354).

Almost surely, 2^9992817690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9992817690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12292907328).

9992817690 is an abundant number, since it is smaller than the sum of its proper divisors (14592996966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9992817690 is a wasteful number, since it uses less digits than its factorization.

9992817690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38783.

The product of its (nonzero) digits is 4408992, while the sum is 60.

The square root of 9992817690 is about 99964.0819994862. The cubic root of 9992817690 is about 2153.9187725689.

The spelling of 9992817690 in words is "nine billion, nine hundred ninety-two million, eight hundred seventeen thousand, six hundred ninety".