3958438 has 16 divisors (see below), whose sum is σ = 6759936. Its totient is φ = 1720840.

The previous prime is 3958397. The next prime is 3958439. The reversal of 3958438 is 8348593.

It is a self number, because there is not a number n which added to its sum of digits gives 3958438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958439) 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, 3406 + ... + 4417.

It is an arithmetic number, because the mean of its divisors is an integer number (422496).

Almost surely, 2^3958438 is an apocalyptic number.

3958438 is a deficient number, since it is larger than the sum of its proper divisors (2801498).

3958438 is a wasteful number, since it uses less digits than its factorization.

3958438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7859.

The product of its digits is 103680, while the sum is 40.

The square root of 3958438 is about 1989.5823682371. The cubic root of 3958438 is about 158.1883935540.

It can be divided in two parts, 3 and 958438, that added together give a square (958441 = 979²).

The spelling of 3958438 in words is "three million, nine hundred fifty-eight thousand, four hundred thirty-eight".