3091907989 has 2 divisors, whose sum is σ = 3091907990. Its totient is φ = 3091907988.

The previous prime is 3091907983. The next prime is 3091908007. The reversal of 3091907989 is 9897091903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2658227364 + 433680625 = 51558^2 + 20825^2 .

It is a cyclic number.

It is not a de Polignac number, because 3091907989 - 2⁵ = 3091907957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3091907983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1545953994 + 1545953995.

It is an arithmetic number, because the mean of its divisors is an integer number (1545953995).

Almost surely, 2^3091907989 is an apocalyptic number.

It is an amenable number.

3091907989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3091907989 is an equidigital number, since it uses as much as digits as its factorization.

3091907989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 3091907989 is about 55604.9277402642. The cubic root of 3091907989 is about 1456.8299250318.

The spelling of 3091907989 in words is "three billion, ninety-one million, nine hundred seven thousand, nine hundred eighty-nine".