3987776393 has 2 divisors, whose sum is σ = 3987776394. Its totient is φ = 3987776392.

The previous prime is 3987776383. The next prime is 3987776483. The reversal of 3987776393 is 3936777893.

3987776393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3948488569 + 39287824 = 62837^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 3987776393 - 2¹⁴ = 3987760009 is a prime.

It is not a weakly prime, because it can be changed into another prime (3987776383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993888196 + 1993888197.

It is an arithmetic number, because the mean of its divisors is an integer number (1993888197).

Almost surely, 2^3987776393 is an apocalyptic number.

It is an amenable number.

3987776393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987776393 is an equidigital number, since it uses as much as digits as its factorization.

3987776393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36006768, while the sum is 62.

The square root of 3987776393 is about 63148.8431643843. The cubic root of 3987776393 is about 1585.7824215040.

The spelling of 3987776393 in words is "three billion, nine hundred eighty-seven million, seven hundred seventy-six thousand, three hundred ninety-three".