4138438 has 8 divisors (see below), whose sum is σ = 6408000. Its totient is φ = 2002440.

The previous prime is 4138391. The next prime is 4138451. The reversal of 4138438 is 8348314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33313 + ... + 33436.

It is an arithmetic number, because the mean of its divisors is an integer number (801000).

Almost surely, 2^4138438 is an apocalyptic number.

4138438 is a deficient number, since it is larger than the sum of its proper divisors (2269562).

4138438 is a wasteful number, since it uses less digits than its factorization.

4138438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66782.

The product of its digits is 9216, while the sum is 31.

The square root of 4138438 is about 2034.3151181663. The cubic root of 4138438 is about 160.5506806433.

The spelling of 4138438 in words is "four million, one hundred thirty-eight thousand, four hundred thirty-eight".