4321905 has 16 divisors (see below), whose sum is σ = 7903104. Its totient is φ = 1975680.

The previous prime is 4321901. The next prime is 4321931. The reversal of 4321905 is 5091234.

It is not a de Polignac number, because 4321905 - 2² = 4321901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4321901) 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 15 ways as a sum of consecutive naturals, for example, 20476 + ... + 20685.

It is an arithmetic number, because the mean of its divisors is an integer number (493944).

Almost surely, 2^4321905 is an apocalyptic number.

It is an amenable number.

4321905 is a deficient number, since it is larger than the sum of its proper divisors (3581199).

4321905 is a wasteful number, since it uses less digits than its factorization.

4321905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41176.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 4321905 is about 2078.9191903487. The cubic root of 4321905 is about 162.8889931330. Note that the first 3 decimals are identical.

The spelling of 4321905 in words is "four million, three hundred twenty-one thousand, nine hundred five".