9777798 has 24 divisors (see below), whose sum is σ = 21287448. Its totient is φ = 3243552.

The previous prime is 9777797. The next prime is 9777851. The reversal of 9777798 is 8977779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9777791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2890 + ... + 5282.

It is an arithmetic number, because the mean of its divisors is an integer number (886977).

Almost surely, 2^9777798 is an apocalyptic number.

9777798 is an abundant number, since it is smaller than the sum of its proper divisors (11509650).

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

9777798 is a wasteful number, since it uses less digits than its factorization.

9777798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2625 counting only the distinct ones).

The product of its digits is 1555848, while the sum is 54.

The square root of 9777798 is about 3126.9470734248. The cubic root of 9777798 is about 213.8357694166.

The spelling of 9777798 in words is "nine million, seven hundred seventy-seven thousand, seven hundred ninety-eight".