4216381 has 12 divisors (see below), whose sum is σ = 4651860. Its totient is φ = 3818880.

The previous prime is 4216367. The next prime is 4216393. The reversal of 4216381 is 1836124.

It can be written as a sum of positive squares in 6 ways, for example, as 793881 + 3422500 = 891^2 + 1850^2 .

It is not a de Polignac number, because 4216381 - 2¹³ = 4208189 is a prime.

It is a super-2 number, since 2×4216381² = 35555737474322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4216351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10105 + ... + 10513.

It is an arithmetic number, because the mean of its divisors is an integer number (387655).

Almost surely, 2^4216381 is an apocalyptic number.

It is an amenable number.

4216381 is a deficient number, since it is larger than the sum of its proper divisors (435479).

4216381 is a wasteful number, since it uses less digits than its factorization.

4216381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 483 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 4216381 is about 2053.3828186678. The cubic root of 4216381 is about 161.5523510181.

The spelling of 4216381 in words is "four million, two hundred sixteen thousand, three hundred eighty-one".