3969091943 has 2 divisors, whose sum is σ = 3969091944. Its totient is φ = 3969091942.

The previous prime is 3969091939. The next prime is 3969091957. The reversal of 3969091943 is 3491909693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3969091943 - 2² = 3969091939 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3969091043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984545971 + 1984545972.

It is an arithmetic number, because the mean of its divisors is an integer number (1984545972).

Almost surely, 2^3969091943 is an apocalyptic number.

3969091943 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969091943 is an equidigital number, since it uses as much as digits as its factorization.

3969091943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1417176, while the sum is 53.

The square root of 3969091943 is about 63000.7297021233. The cubic root of 3969091943 is about 1583.3018520598.

The spelling of 3969091943 in words is "three billion, nine hundred sixty-nine million, ninety-one thousand, nine hundred forty-three".