3881438 has 24 divisors (see below), whose sum is σ = 6565944. Its totient is φ = 1718640.

The previous prime is 3881431. The next prime is 3881441. The reversal of 3881438 is 8341883.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3881398 and 3881407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881431) 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, 10220 + ... + 10592.

It is an arithmetic number, because the mean of its divisors is an integer number (273581).

Almost surely, 2^3881438 is an apocalyptic number.

3881438 is a deficient number, since it is larger than the sum of its proper divisors (2684506).

3881438 is a wasteful number, since it uses less digits than its factorization.

3881438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 429 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 3881438 is about 1970.1365434913. The cubic root of 3881438 is about 157.1559703343.

The spelling of 3881438 in words is "three million, eight hundred eighty-one thousand, four hundred thirty-eight".