3938427173 has 2 divisors, whose sum is σ = 3938427174. Its totient is φ = 3938427172.

The previous prime is 3938427167. The next prime is 3938427203. The reversal of 3938427173 is 3717248393.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3514355524 + 424071649 = 59282^2 + 20593^2 .

It is a cyclic number.

It is not a de Polignac number, because 3938427173 - 2¹⁸ = 3938165029 is a prime.

It is a super-2 number, since 2×3938427173² = 31022417194049543858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3938427113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969213586 + 1969213587.

It is an arithmetic number, because the mean of its divisors is an integer number (1969213587).

Almost surely, 2^3938427173 is an apocalyptic number.

It is an amenable number.

3938427173 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938427173 is an equidigital number, since it uses as much as digits as its factorization.

3938427173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 3938427173 is about 62756.8894464982. The cubic root of 3938427173 is about 1579.2138337732.

The spelling of 3938427173 in words is "three billion, nine hundred thirty-eight million, four hundred twenty-seven thousand, one hundred seventy-three".