3821438 has 4 divisors (see below), whose sum is σ = 5732160. Its totient is φ = 1910718.

The previous prime is 3821437. The next prime is 3821483. The reversal of 3821438 is 8341283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8341283 = 2659 ⋅3137.

It is a self number, because there is not a number n which added to its sum of digits gives 3821438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955358 + ... + 955361.

It is an arithmetic number, because the mean of its divisors is an integer number (1433040).

Almost surely, 2^3821438 is an apocalyptic number.

3821438 is a deficient number, since it is larger than the sum of its proper divisors (1910722).

3821438 is a wasteful number, since it uses less digits than its factorization.

3821438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910721.

The product of its digits is 4608, while the sum is 29.

The square root of 3821438 is about 1954.8498663580. The cubic root of 3821438 is about 156.3419793374.

The spelling of 3821438 in words is "three million, eight hundred twenty-one thousand, four hundred thirty-eight".