9776978 has 12 divisors (see below), whose sum is σ = 15332478. Its totient is φ = 4675440.

The previous prime is 9776971. The next prime is 9776981. The reversal of 9776978 is 8796779.

It is a happy number.

9776978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5396329 + 4380649 = 2323^2 + 2093^2 .

It is not an unprimeable number, because it can be changed into a prime (9776971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3563 + ... + 5678.

Almost surely, 2^9776978 is an apocalyptic number.

9776978 is a deficient number, since it is larger than the sum of its proper divisors (5555500).

9776978 is a wasteful number, since it uses less digits than its factorization.

9776978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289 (or 9266 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 53.

The square root of 9776978 is about 3126.8159523707. The cubic root of 9776978 is about 213.8297915801.

The spelling of 9776978 in words is "nine million, seven hundred seventy-six thousand, nine hundred seventy-eight".