9798779 has 4 divisors (see below), whose sum is σ = 9964920. Its totient is φ = 9632640.

The previous prime is 9798769. The next prime is 9798793. The reversal of 9798779 is 9778979.

9798779 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9798779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9798769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82982 + ... + 83099.

It is an arithmetic number, because the mean of its divisors is an integer number (2491230).

Almost surely, 2^9798779 is an apocalyptic number.

9798779 is a deficient number, since it is larger than the sum of its proper divisors (166141).

9798779 is a wasteful number, since it uses less digits than its factorization.

9798779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166140.

The product of its digits is 2000376, while the sum is 56.

The square root of 9798779 is about 3130.3001453535. The cubic root of 9798779 is about 213.9886082969.

The spelling of 9798779 in words is "nine million, seven hundred ninety-eight thousand, seven hundred seventy-nine".