9381406 has 16 divisors (see below), whose sum is σ = 14601600. Its totient is φ = 4515840.

The previous prime is 9381403. The next prime is 9381419. The reversal of 9381406 is 6041839.

9381406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9381403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20670 + ... + 21118.

It is an arithmetic number, because the mean of its divisors is an integer number (912600).

Almost surely, 2^9381406 is an apocalyptic number.

9381406 is a deficient number, since it is larger than the sum of its proper divisors (5220194).

9381406 is a wasteful number, since it uses less digits than its factorization.

9381406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 9381406 is about 3062.9080952585. The cubic root of 9381406 is about 210.9061823208.

The spelling of 9381406 in words is "nine million, three hundred eighty-one thousand, four hundred six".