3993242317 has 2 divisors, whose sum is σ = 3993242318. Its totient is φ = 3993242316.

The previous prime is 3993242287. The next prime is 3993242321. The reversal of 3993242317 is 7132423993.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3062626281 + 930616036 = 55341^2 + 30506^2 .

It is a cyclic number.

It is not a de Polignac number, because 3993242317 - 2³¹ = 1845758669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3993242117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996621158 + 1996621159.

It is an arithmetic number, because the mean of its divisors is an integer number (1996621159).

Almost surely, 2^3993242317 is an apocalyptic number.

It is an amenable number.

3993242317 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993242317 is an equidigital number, since it uses as much as digits as its factorization.

3993242317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 43.

The square root of 3993242317 is about 63192.1064453465. The cubic root of 3993242317 is about 1586.5066186623.

The spelling of 3993242317 in words is "three billion, nine hundred ninety-three million, two hundred forty-two thousand, three hundred seventeen".