9978338 has 4 divisors (see below), whose sum is σ = 14967510. Its totient is φ = 4989168.

The previous prime is 9978323. The next prime is 9978341. The reversal of 9978338 is 8338799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6265009 + 3713329 = 2503^2 + 1927^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9978292 and 9978301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494583 + ... + 2494586.

Almost surely, 2^9978338 is an apocalyptic number.

9978338 is a deficient number, since it is larger than the sum of its proper divisors (4989172).

9978338 is a wasteful number, since it uses less digits than its factorization.

9978338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989171.

The product of its digits is 326592, while the sum is 47.

The square root of 9978338 is about 3158.8507403801. The cubic root of 9978338 is about 215.2877919923.

The spelling of 9978338 in words is "nine million, nine hundred seventy-eight thousand, three hundred thirty-eight".