3978322 has 4 divisors (see below), whose sum is σ = 5967486. Its totient is φ = 1989160.

The previous prime is 3978301. The next prime is 3978329. The reversal of 3978322 is 2238793.

3978322 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, and also an emirpimes, since its reverse is a distinct semiprime: 2238793 = 173 ⋅12941.

It can be written as a sum of positive squares in only one way, i.e., 3956121 + 22201 = 1989^2 + 149^2 .

It is not an unprimeable number, because it can be changed into a prime (3978329) 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, 994579 + ... + 994582.

Almost surely, 2^3978322 is an apocalyptic number.

3978322 is a deficient number, since it is larger than the sum of its proper divisors (1989164).

3978322 is a wasteful number, since it uses less digits than its factorization.

3978322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989163.

The product of its digits is 18144, while the sum is 34.

The square root of 3978322 is about 1994.5731372903. The cubic root of 3978322 is about 158.4528215922.

It can be divided in two parts, 397832 and 2, that multiplied together give a square (795664 = 892²).

The spelling of 3978322 in words is "three million, nine hundred seventy-eight thousand, three hundred twenty-two".