3961394 has 4 divisors (see below), whose sum is σ = 5942094. Its totient is φ = 1980696.

The previous prime is 3961393. The next prime is 3961411. The reversal of 3961394 is 4931693.

3961394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 3948169 + 13225 = 1987^2 + 115^2 .

It is not an unprimeable number, because it can be changed into a prime (3961393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990347 + ... + 990350.

Almost surely, 2^3961394 is an apocalyptic number.

3961394 is a deficient number, since it is larger than the sum of its proper divisors (1980700).

3961394 is a wasteful number, since it uses less digits than its factorization.

3961394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980699.

The product of its digits is 17496, while the sum is 35.

The square root of 3961394 is about 1990.3250990730. The cubic root of 3961394 is about 158.2277599693.

Subtracting 3961394 from its reverse (4931693), we obtain a cube (970299 = 99³).

The spelling of 3961394 in words is "three million, nine hundred sixty-one thousand, three hundred ninety-four".