9278401 has 8 divisors (see below), whose sum is σ = 10207008. Its totient is φ = 8433700.

The previous prime is 9278383. The next prime is 9278429. The reversal of 9278401 is 1048729.

It is not a de Polignac number, because 9278401 - 2⁵ = 9278369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9278491) 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, 2155 + ... + 4816.

It is an arithmetic number, because the mean of its divisors is an integer number (1275876).

Almost surely, 2^9278401 is an apocalyptic number.

It is an amenable number.

9278401 is a deficient number, since it is larger than the sum of its proper divisors (928607).

9278401 is an equidigital number, since it uses as much as digits as its factorization.

9278401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004 (or 6982 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 9278401 is about 3046.0467823065. The cubic root of 9278401 is about 210.1314445412.

The spelling of 9278401 in words is "nine million, two hundred seventy-eight thousand, four hundred one".