9798778 has 16 divisors (see below), whose sum is σ = 16096896. Its totient is φ = 4436640.

The previous prime is 9798769. The next prime is 9798793. The reversal of 9798778 is 8778979.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6175 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (1006056).

Almost surely, 2^9798778 is an apocalyptic number.

9798778 is a deficient number, since it is larger than the sum of its proper divisors (6298118).

9798778 is a wasteful number, since it uses less digits than its factorization.

9798778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749.

The product of its digits is 1778112, while the sum is 55.

The square root of 9798778 is about 3130.2999856244. The cubic root of 9798778 is about 213.9886010174.

The spelling of 9798778 in words is "nine million, seven hundred ninety-eight thousand, seven hundred seventy-eight".