9978122 has 16 divisors (see below), whose sum is σ = 18660672. Its totient is φ = 3887520.

The previous prime is 9978119. The next prime is 9978131. The reversal of 9978122 is 2218799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32243 + ... + 32550.

It is an arithmetic number, because the mean of its divisors is an integer number (1166292).

Almost surely, 2^9978122 is an apocalyptic number.

9978122 is a deficient number, since it is larger than the sum of its proper divisors (8682550).

9978122 is a wasteful number, since it uses less digits than its factorization.

9978122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64813.

The product of its digits is 18144, while the sum is 38.

The square root of 9978122 is about 3158.8165505455. The cubic root of 9978122 is about 215.2862385440.

It can be divided in two parts, 997 and 8122, that added together give a palindrome (9119).

The spelling of 9978122 in words is "nine million, nine hundred seventy-eight thousand, one hundred twenty-two".