3968522 has 4 divisors (see below), whose sum is σ = 5952786. Its totient is φ = 1984260.

The previous prime is 3968521. The next prime is 3968533. The reversal of 3968522 is 2258693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2258693 = 73 ⋅30941.

It can be written as a sum of positive squares in only one way, i.e., 2825761 + 1142761 = 1681^2 + 1069^2 .

It is not an unprimeable number, because it can be changed into a prime (3968521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992129 + ... + 992132.

Almost surely, 2^3968522 is an apocalyptic number.

3968522 is a deficient number, since it is larger than the sum of its proper divisors (1984264).

3968522 is a wasteful number, since it uses less digits than its factorization.

3968522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984263.

The product of its digits is 25920, while the sum is 35.

The square root of 3968522 is about 1992.1149565223. The cubic root of 3968522 is about 158.3226063524.

The spelling of 3968522 in words is "three million, nine hundred sixty-eight thousand, five hundred twenty-two".