3938788377 has 10 divisors (see below), whose sum is σ = 5883869178. Its totient is φ = 2625858864.

The previous prime is 3938788339. The next prime is 3938788391. The reversal of 3938788377 is 7738878393.

It can be written as a sum of positive squares in only one way, i.e., 3919260816 + 19527561 = 62604^2 + 4419^2 .

It is not a de Polignac number, because 3938788377 - 2⁶ = 3938788313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3938788577) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24313428 + ... + 24313589.

Almost surely, 2^3938788377 is an apocalyptic number.

It is an amenable number.

3938788377 is a deficient number, since it is larger than the sum of its proper divisors (1945080801).

3938788377 is an equidigital number, since it uses as much as digits as its factorization.

3938788377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48627029 (or 48627020 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The square root of 3938788377 is about 62759.7671840806. The cubic root of 3938788377 is about 1579.2621103136.

The spelling of 3938788377 in words is "three billion, nine hundred thirty-eight million, seven hundred eighty-eight thousand, three hundred seventy-seven".