9978395 has 16 divisors (see below), whose sum is σ = 13791168. Its totient is φ = 6789120.

The previous prime is 9978383. The next prime is 9978427. The reversal of 9978395 is 5938799.

It is not a de Polignac number, because 9978395 - 2¹⁰ = 9977371 is a prime.

It is a Duffinian number.

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, 3755 + ... + 5835.

It is an arithmetic number, because the mean of its divisors is an integer number (861948).

Almost surely, 2^9978395 is an apocalyptic number.

9978395 is a deficient number, since it is larger than the sum of its proper divisors (3812773).

9978395 is a wasteful number, since it uses less digits than its factorization.

9978395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230.

The product of its digits is 612360, while the sum is 50.

The square root of 9978395 is about 3158.8597626359. The cubic root of 9978395 is about 215.2882019263.

The spelling of 9978395 in words is "nine million, nine hundred seventy-eight thousand, three hundred ninety-five".