3967118 has 4 divisors (see below), whose sum is σ = 5950680. Its totient is φ = 1983558.

The previous prime is 3967111. The next prime is 3967121. The reversal of 3967118 is 8117693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8117693 = 19 ⋅427247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991778 + ... + 991781.

It is an arithmetic number, because the mean of its divisors is an integer number (1487670).

Almost surely, 2^3967118 is an apocalyptic number.

3967118 is a deficient number, since it is larger than the sum of its proper divisors (1983562).

3967118 is a wasteful number, since it uses less digits than its factorization.

3967118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983561.

The product of its digits is 9072, while the sum is 35.

The square root of 3967118 is about 1991.7625360469. The cubic root of 3967118 is about 158.3039334763.

The spelling of 3967118 in words is "three million, nine hundred sixty-seven thousand, one hundred eighteen".