3938266769 has 2 divisors, whose sum is σ = 3938266770. Its totient is φ = 3938266768.

The previous prime is 3938266727. The next prime is 3938266799. The reversal of 3938266769 is 9676628393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3707226769 + 231040000 = 60887^2 + 15200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3938266769 is a prime.

It is a super-2 number, since 2×3938266769² = 31019890287619398722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3938266799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969133384 + 1969133385.

It is an arithmetic number, because the mean of its divisors is an integer number (1969133385).

Almost surely, 2^3938266769 is an apocalyptic number.

It is an amenable number.

3938266769 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938266769 is an equidigital number, since it uses as much as digits as its factorization.

3938266769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 59.

The square root of 3938266769 is about 62755.6114542755. The cubic root of 3938266769 is about 1579.1923941101.

The spelling of 3938266769 in words is "three billion, nine hundred thirty-eight million, two hundred sixty-six thousand, seven hundred sixty-nine".