3957386 has 4 divisors (see below), whose sum is σ = 5936082. Its totient is φ = 1978692.

The previous prime is 3957383. The next prime is 3957389. The reversal of 3957386 is 6837593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6837593 = 7 ⋅976799.

It is an interprime number because it is at equal distance from previous prime (3957383) and next prime (3957389).

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 17161 = 1985^2 + 131^2 .

It is not an unprimeable number, because it can be changed into a prime (3957383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989345 + ... + 989348.

Almost surely, 2^3957386 is an apocalyptic number.

3957386 is a deficient number, since it is larger than the sum of its proper divisors (1978696).

3957386 is a wasteful number, since it uses less digits than its factorization.

3957386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978695.

The product of its digits is 136080, while the sum is 41.

The square root of 3957386 is about 1989.3179735779. The cubic root of 3957386 is about 158.1743788564.

The spelling of 3957386 in words is "three million, nine hundred fifty-seven thousand, three hundred eighty-six".