3963194784 has 96 divisors (see below), whose sum is σ = 11619699840. Its totient is φ = 1314164736.

The previous prime is 3963194779. The next prime is 3963194789. The reversal of 3963194784 is 4874913693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3963194779) and next prime (3963194789).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3963194784.

It is not an unprimeable number, because it can be changed into a prime (3963194789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154869 + ... + 178635.

It is an arithmetic number, because the mean of its divisors is an integer number (121038540).

Almost surely, 2^3963194784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3963194784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5809849920).

3963194784 is an abundant number, since it is smaller than the sum of its proper divisors (7656505056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3963194784 is a wasteful number, since it uses less digits than its factorization.

3963194784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23979 (or 23965 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 3963194784 is about 62953.9099977118. The cubic root of 3963194784 is about 1582.5173224222.

The spelling of 3963194784 in words is "three billion, nine hundred sixty-three million, one hundred ninety-four thousand, seven hundred eighty-four".