9999000774 has 80 divisors (see below), whose sum is σ = 25638405408. Its totient is φ = 2853232128.

The previous prime is 9999000761. The next prime is 9999000797. The reversal of 9999000774 is 4770009999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999000774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 962134 + ... + 972470.

Almost surely, 2^9999000774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999000774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12819202704).

9999000774 is an abundant number, since it is smaller than the sum of its proper divisors (15639404634).

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

9999000774 is a wasteful number, since it uses less digits than its factorization.

9999000774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11211 (or 11202 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 9999000774 is about 99995.0037451872. The cubic root of 9999000774 is about 2154.3629287364.

The spelling of 9999000774 in words is "nine billion, nine hundred ninety-nine million, seven hundred seventy-four", and thus it is an aban number.