3942357917 has 2 divisors, whose sum is σ = 3942357918. Its totient is φ = 3942357916.

The previous prime is 3942357841. The next prime is 3942357931. The reversal of 3942357917 is 7197532493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2619290041 + 1323067876 = 51179^2 + 36374^2 .

It is a cyclic number.

It is not a de Polignac number, because 3942357917 - 2¹⁶ = 3942292381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3942357967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971178958 + 1971178959.

It is an arithmetic number, because the mean of its divisors is an integer number (1971178959).

Almost surely, 2^3942357917 is an apocalyptic number.

It is an amenable number.

3942357917 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942357917 is an equidigital number, since it uses as much as digits as its factorization.

3942357917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The square root of 3942357917 is about 62788.1988673031. The cubic root of 3942357917 is about 1579.7390367750.

The spelling of 3942357917 in words is "three billion, nine hundred forty-two million, three hundred fifty-seven thousand, nine hundred seventeen".