3978705199 has 32 divisors (see below), whose sum is σ = 4875632640. Its totient is φ = 3173385600.

The previous prime is 3978705197. The next prime is 3978705233. The reversal of 3978705199 is 9915078793.

It is a happy number.

It is not a de Polignac number, because 3978705199 - 2¹ = 3978705197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978705193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1704237 + ... + 1706569.

It is an arithmetic number, because the mean of its divisors is an integer number (152363520).

Almost surely, 2^3978705199 is an apocalyptic number.

3978705199 is a deficient number, since it is larger than the sum of its proper divisors (896927441).

3978705199 is a wasteful number, since it uses less digits than its factorization.

3978705199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 4286520, while the sum is 58.

The square root of 3978705199 is about 63076.9783597788. The cubic root of 3978705199 is about 1584.5790891408.

The spelling of 3978705199 in words is "three billion, nine hundred seventy-eight million, seven hundred five thousand, one hundred ninety-nine".