3957826 has 4 divisors (see below), whose sum is σ = 5936742. Its totient is φ = 1978912.

The previous prime is 3957799. The next prime is 3957829. The reversal of 3957826 is 6287593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2886601 + 1071225 = 1699^2 + 1035^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 3¹¹ + 9³ + 5⁵ + 7² + 8 + 2²¹ + 6⁸ .

It is not an unprimeable number, because it can be changed into a prime (3957829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989455 + ... + 989458.

Almost surely, 2^3957826 is an apocalyptic number.

3957826 is a deficient number, since it is larger than the sum of its proper divisors (1978916).

3957826 is a wasteful number, since it uses less digits than its factorization.

3957826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978915.

The product of its digits is 90720, while the sum is 40.

The square root of 3957826 is about 1989.4285611703. The cubic root of 3957826 is about 158.1802408191.

The spelling of 3957826 in words is "three million, nine hundred fifty-seven thousand, eight hundred twenty-six".