9778315 has 24 divisors (see below), whose sum is σ = 12776112. Its totient is φ = 7180800.

The previous prime is 9778309. The next prime is 9778319. The reversal of 9778315 is 5138779.

9778315 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9778315 - 2⁷ = 9778187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9778319) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 96765 + ... + 96865.

It is an arithmetic number, because the mean of its divisors is an integer number (532338).

Almost surely, 2^9778315 is an apocalyptic number.

9778315 is a deficient number, since it is larger than the sum of its proper divisors (2997797).

9778315 is a wasteful number, since it uses less digits than its factorization.

9778315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 190 counting only the distinct ones).

The product of its digits is 52920, while the sum is 40.

The square root of 9778315 is about 3127.0297408243. The cubic root of 9778315 is about 213.8395381978.

The spelling of 9778315 in words is "nine million, seven hundred seventy-eight thousand, three hundred fifteen".