9866000790 has 144 divisors (see below), whose sum is σ = 27230967504. Its totient is φ = 2476448640.

The previous prime is 9866000761. The next prime is 9866000839. The reversal of 9866000790 is 970006689.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3198589 + ... + 3201671.

It is an arithmetic number, because the mean of its divisors is an integer number (189103941).

Almost surely, 2^9866000790 is an apocalyptic number.

9866000790 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9866000790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13615483752).

9866000790 is an abundant number, since it is smaller than the sum of its proper divisors (17364966714).

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

9866000790 is a wasteful number, since it uses less digits than its factorization.

9866000790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9866000790 is about 99327.7443114460. The cubic root of 9866000790 is about 2144.7682994223.

The spelling of 9866000790 in words is "nine billion, eight hundred sixty-six million, seven hundred ninety", and thus it is an aban number.