9978331 has 8 divisors (see below), whose sum is σ = 10992384. Its totient is φ = 8982120.

The previous prime is 9978323. The next prime is 9978341. The reversal of 9978331 is 1338799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9978331 - 2³ = 9978323 is a prime.

It is a super-2 number, since 2×9978331² = 199134179091122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9978301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3271 + ... + 5536.

It is an arithmetic number, because the mean of its divisors is an integer number (1374048).

Almost surely, 2^9978331 is an apocalyptic number.

9978331 is a deficient number, since it is larger than the sum of its proper divisors (1014053).

9978331 is a wasteful number, since it uses less digits than its factorization.

9978331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921.

The product of its digits is 40824, while the sum is 40.

The square root of 9978331 is about 3158.8496323820. The cubic root of 9978331 is about 215.2877416494.

The spelling of 9978331 in words is "nine million, nine hundred seventy-eight thousand, three hundred thirty-one".