9978416 has 60 divisors (see below), whose sum is σ = 23074416. Its totient is φ = 4093440.

The previous prime is 9978383. The next prime is 9978427. The reversal of 9978416 is 6148799.

It is an Ulam number.

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 11 ways as a sum of consecutive naturals, for example, 188246 + ... + 188298.

Almost surely, 2^9978416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9978416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11537208).

9978416 is an abundant number, since it is smaller than the sum of its proper divisors (13096000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9978416 is a wasteful number, since it uses less digits than its factorization.

9978416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 103 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 9978416 is about 3158.8630866183. The cubic root of 9978416 is about 215.2883529543.

The spelling of 9978416 in words is "nine million, nine hundred seventy-eight thousand, four hundred sixteen".