3978998793 has 36 divisors (see below), whose sum is σ = 7293609648. Its totient is φ = 2067009840.

The previous prime is 3978998743. The next prime is 3978998813.

3978998793 is a `hidden beast` number, since 397 + 89 + 98 + 79 + 3 = 666.

3978998793 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3978998793 - 2⁶ = 3978998729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3978998713) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 405271 + ... + 414972.

It is an arithmetic number, because the mean of its divisors is an integer number (202600268).

Almost surely, 2^3978998793 is an apocalyptic number.

3978998793 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3978998793 is a deficient number, since it is larger than the sum of its proper divisors (3314610855).

3978998793 is a wasteful number, since it uses less digits than its factorization.

3978998793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820274 (or 820264 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 3978998793 is about 63079.3055843198. The cubic root of 3978998793 is about 1584.6180642552.

The spelling of 3978998793 in words is "three billion, nine hundred seventy-eight million, nine hundred ninety-eight thousand, seven hundred ninety-three".