3993411946 has 4 divisors (see below), whose sum is σ = 5990117922. Its totient is φ = 1996705972.

The previous prime is 3993411943. The next prime is 3993412061. The reversal of 3993411946 is 6491143993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6491143993 = 1423 ⋅4561591.

It can be written as a sum of positive squares in only one way, i.e., 3972150625 + 21261321 = 63025^2 + 4611^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3993411946.

It is not an unprimeable number, because it can be changed into a prime (3993411943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998352985 + ... + 998352988.

Almost surely, 2^3993411946 is an apocalyptic number.

3993411946 is a deficient number, since it is larger than the sum of its proper divisors (1996705976).

3993411946 is a wasteful number, since it uses less digits than its factorization.

3993411946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996705975.

The product of its digits is 629856, while the sum is 49.

The square root of 3993411946 is about 63193.4486003098. The cubic root of 3993411946 is about 1586.5290827570.

The spelling of 3993411946 in words is "three billion, nine hundred ninety-three million, four hundred eleven thousand, nine hundred forty-six".