9999774 has 40 divisors (see below), whose sum is σ = 23731488. Its totient is φ = 3136320.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999774 is 4779999.

9999774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 939 + ... + 4569.

Almost surely, 2^9999774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11865744).

9999774 is an abundant number, since it is smaller than the sum of its proper divisors (13731714).

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

9999774 is a wasteful number, since it uses less digits than its factorization.

9999774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 3653 counting only the distinct ones).

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

The square root of 9999774 is about 3162.2419262289. The cubic root of 9999774 is about 215.4418459835.

The spelling of 9999774 in words is "nine million, nine hundred ninety-nine thousand, seven hundred seventy-four".