4213805 has 8 divisors (see below), whose sum is σ = 5079672. Its totient is φ = 3355648.

The previous prime is 4213793. The next prime is 4213813. The reversal of 4213805 is 5083124.

It can be written as a sum of positive squares in 4 ways, for example, as 157609 + 4056196 = 397^2 + 2014^2 .

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 4213805 - 2¹⁶ = 4148269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (634959).

Almost surely, 2^4213805 is an apocalyptic number.

It is an amenable number.

4213805 is a deficient number, since it is larger than the sum of its proper divisors (865867).

4213805 is a wasteful number, since it uses less digits than its factorization.

4213805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4213805 is about 2052.7554652223. The cubic root of 4213805 is about 161.5194441535.

Adding to 4213805 its reverse (5083124), we get a palindrome (9296929).

The spelling of 4213805 in words is "four million, two hundred thirteen thousand, eight hundred five".