3975139769 has 2 divisors, whose sum is σ = 3975139770. Its totient is φ = 3975139768.

The previous prime is 3975139711. The next prime is 3975139771. The reversal of 3975139769 is 9679315793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2207778169 + 1767361600 = 46987^2 + 42040^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975139769 - 2⁸ = 3975139513 is a prime.

It is a super-2 number, since 2×3975139769² = 31603472366170746722, which contains 22 as substring.

Together with 3975139771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3975139799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987569884 + 1987569885.

It is an arithmetic number, because the mean of its divisors is an integer number (1987569885).

Almost surely, 2^3975139769 is an apocalyptic number.

It is an amenable number.

3975139769 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975139769 is an equidigital number, since it uses as much as digits as its factorization.

3975139769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9644670, while the sum is 59.

The square root of 3975139769 is about 63048.7094951197. The cubic root of 3975139769 is about 1584.1056190042.

The spelling of 3975139769 in words is "three billion, nine hundred seventy-five million, one hundred thirty-nine thousand, seven hundred sixty-nine".