9978801 has 12 divisors (see below), whose sum is σ = 15477552. Its totient is φ = 5702088.

The previous prime is 9978799. The next prime is 9978811. The reversal of 9978801 is 1088799.

It is not a de Polignac number, because 9978801 - 2¹ = 9978799 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9978811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33795 + ... + 34088.

It is an arithmetic number, because the mean of its divisors is an integer number (1289796).

Almost surely, 2^9978801 is an apocalyptic number.

It is an amenable number.

9978801 is a deficient number, since it is larger than the sum of its proper divisors (5498751).

9978801 is a wasteful number, since it uses less digits than its factorization.

9978801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67900 (or 67893 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 9978801 is about 3158.9240256771. The cubic root of 9978801 is about 215.2911217621.

The spelling of 9978801 in words is "nine million, nine hundred seventy-eight thousand, eight hundred one".