3967438 has 8 divisors (see below), whose sum is σ = 6089688. Its totient is φ = 1937544.

The previous prime is 3967429. The next prime is 3967441. The reversal of 3967438 is 8347693.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3967438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22981 + ... + 23152.

It is an arithmetic number, because the mean of its divisors is an integer number (761211).

Almost surely, 2^3967438 is an apocalyptic number.

3967438 is a deficient number, since it is larger than the sum of its proper divisors (2122250).

3967438 is a wasteful number, since it uses less digits than its factorization.

3967438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46178.

The product of its digits is 108864, while the sum is 40.

The square root of 3967438 is about 1991.8428652883. The cubic root of 3967438 is about 158.3081897901.

The spelling of 3967438 in words is "three million, nine hundred sixty-seven thousand, four hundred thirty-eight".