3906091939 has 2 divisors, whose sum is σ = 3906091940. Its totient is φ = 3906091938.

The previous prime is 3906091901. The next prime is 3906091963. The reversal of 3906091939 is 9391906093.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3906091939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3906091892 and 3906091901.

It is not a weakly prime, because it can be changed into another prime (3906091999) 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, 1953045969 + 1953045970.

It is an arithmetic number, because the mean of its divisors is an integer number (1953045970).

Almost surely, 2^3906091939 is an apocalyptic number.

3906091939 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906091939 is an equidigital number, since it uses as much as digits as its factorization.

3906091939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 3906091939 is about 62498.7354992083. The cubic root of 3906091939 is about 1574.8800700148.

The spelling of 3906091939 in words is "three billion, nine hundred six million, ninety-one thousand, nine hundred thirty-nine".