9780978922 has 32 divisors (see below), whose sum is σ = 17308650240. Its totient is φ = 4086707520.

The previous prime is 9780978913. The next prime is 9780978931. The reversal of 9780978922 is 2298790879.

It is an interprime number because it is at equal distance from previous prime (9780978913) and next prime (9780978931).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3193 + ... + 139900.

It is an arithmetic number, because the mean of its divisors is an integer number (540895320).

Almost surely, 2^9780978922 is an apocalyptic number.

9780978922 is a deficient number, since it is larger than the sum of its proper divisors (7527671318).

9780978922 is a wasteful number, since it uses less digits than its factorization.

9780978922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143358.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 9780978922 is about 98898.8317524530. The cubic root of 9780978922 is about 2138.5895531715.

The spelling of 9780978922 in words is "nine billion, seven hundred eighty million, nine hundred seventy-eight thousand, nine hundred twenty-two".