3954365993 has 2 divisors, whose sum is σ = 3954365994. Its totient is φ = 3954365992.

The previous prime is 3954365977. The next prime is 3954366007. The reversal of 3954365993 is 3995634593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3751930009 + 202435984 = 61253^2 + 14228^2 .

It is a cyclic number.

It is not a de Polignac number, because 3954365993 - 2⁴ = 3954365977 is a prime.

It is not a weakly prime, because it can be changed into another prime (3954365593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977182996 + 1977182997.

It is an arithmetic number, because the mean of its divisors is an integer number (1977182997).

Almost surely, 2^3954365993 is an apocalyptic number.

It is an amenable number.

3954365993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3954365993 is an equidigital number, since it uses as much as digits as its factorization.

3954365993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11809800, while the sum is 56.

The square root of 3954365993 is about 62883.7498325283. The cubic root of 3954365993 is about 1581.3413265213.

The spelling of 3954365993 in words is "three billion, nine hundred fifty-four million, three hundred sixty-five thousand, nine hundred ninety-three".