9790978 has 16 divisors (see below), whose sum is σ = 15393024. Its totient is φ = 4664880.

The previous prime is 9790969. The next prime is 9790981. The reversal of 9790978 is 8790979.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (962064).

Almost surely, 2^9790978 is an apocalyptic number.

9790978 is a deficient number, since it is larger than the sum of its proper divisors (5602046).

9790978 is a wasteful number, since it uses less digits than its factorization.

9790978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 9790978 is about 3129.0538506072. The cubic root of 9790978 is about 213.9318063789.

Subtracting from 9790978 its reverse (8790979), we obtain a palindrome (999999).

The spelling of 9790978 in words is "nine million, seven hundred ninety thousand, nine hundred seventy-eight".