3984777893 has 2 divisors, whose sum is σ = 3984777894. Its totient is φ = 3984777892.

The previous prime is 3984777889. The next prime is 3984777919. The reversal of 3984777893 is 3987774893.

3984777893 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., 3665333764 + 319444129 = 60542^2 + 17873^2 .

It is a cyclic number.

It is not a de Polignac number, because 3984777893 - 2² = 3984777889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3984777803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992388946 + 1992388947.

It is an arithmetic number, because the mean of its divisors is an integer number (1992388947).

Almost surely, 2^3984777893 is an apocalyptic number.

It is an amenable number.

3984777893 is a deficient number, since it is larger than the sum of its proper divisors (1).

3984777893 is an equidigital number, since it uses as much as digits as its factorization.

3984777893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64012032, while the sum is 65.

The square root of 3984777893 is about 63125.0971722024. The cubic root of 3984777893 is about 1585.3848598548.

The spelling of 3984777893 in words is "three billion, nine hundred eighty-four million, seven hundred seventy-seven thousand, eight hundred ninety-three".