3971794 has 4 divisors (see below), whose sum is σ = 5957694. Its totient is φ = 1985896.

The previous prime is 3971791. The next prime is 3971797. The reversal of 3971794 is 4971793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4971793 = 211 ⋅23563.

It is an interprime number because it is at equal distance from previous prime (3971791) and next prime (3971797).

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 149769 = 1955^2 + 387^2 .

It is not an unprimeable number, because it can be changed into a prime (3971791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992947 + ... + 992950.

Almost surely, 2^3971794 is an apocalyptic number.

3971794 is a deficient number, since it is larger than the sum of its proper divisors (1985900).

3971794 is a wasteful number, since it uses less digits than its factorization.

3971794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985899.

The product of its digits is 47628, while the sum is 40.

The square root of 3971794 is about 1992.9360250645. The cubic root of 3971794 is about 158.3661061123.

Subtracting 3971794 from its reverse (4971793), we obtain a palindrome (999999).

The spelling of 3971794 in words is "three million, nine hundred seventy-one thousand, seven hundred ninety-four".