9421905 has 8 divisors (see below), whose sum is σ = 15075072. Its totient is φ = 5025008.

The previous prime is 9421903. The next prime is 9421921. The reversal of 9421905 is 5091249.

It is a happy number.

9421905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9421905 - 2¹ = 9421903 is a prime.

It is an Ulam number.

9421905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9421903) 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, 314049 + ... + 314078.

It is an arithmetic number, because the mean of its divisors is an integer number (1884384).

Almost surely, 2^9421905 is an apocalyptic number.

It is an amenable number.

9421905 is a deficient number, since it is larger than the sum of its proper divisors (5653167).

9421905 is a wasteful number, since it uses less digits than its factorization.

9421905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628135.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 9421905 is about 3069.5121762261. The cubic root of 9421905 is about 211.2092366756.

The spelling of 9421905 in words is "nine million, four hundred twenty-one thousand, nine hundred five".