4138222 has 16 divisors (see below), whose sum is σ = 6826032. Its totient is φ = 1865920.

The previous prime is 4138217. The next prime is 4138223. The reversal of 4138222 is 2228314.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 4138193 and 4138202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2328 + ... + 3700.

It is an arithmetic number, because the mean of its divisors is an integer number (426627).

Almost surely, 2^4138222 is an apocalyptic number.

4138222 is a deficient number, since it is larger than the sum of its proper divisors (2687810).

4138222 is a wasteful number, since it uses less digits than its factorization.

4138222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 768, while the sum is 22.

The square root of 4138222 is about 2034.2620283533. The cubic root of 4138222 is about 160.5478873551.

The spelling of 4138222 in words is "four million, one hundred thirty-eight thousand, two hundred twenty-two".