4380217 has 4 divisors (see below), whose sum is σ = 4384996. Its totient is φ = 4375440.

The previous prime is 4380209. The next prime is 4380221. The reversal of 4380217 is 7120834.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2595321 + 1784896 = 1611^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 4380217 - 2³ = 4380209 is a prime.

It is a Duffinian number.

4380217 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4380191 and 4380200.

It is not an unprimeable number, because it can be changed into a prime (4380287) 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 3 ways as a sum of consecutive naturals, for example, 534 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (1096249).

Almost surely, 2^4380217 is an apocalyptic number.

It is an amenable number.

4380217 is a deficient number, since it is larger than the sum of its proper divisors (4779).

4380217 is a wasteful number, since it uses less digits than its factorization.

4380217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 4380217 is about 2092.8967963089. The cubic root of 4380217 is about 163.6182997924.

The spelling of 4380217 in words is "four million, three hundred eighty thousand, two hundred seventeen".