3091393 has 2 divisors, whose sum is σ = 3091394. Its totient is φ = 3091392.

The previous prime is 3091391. The next prime is 3091397. The reversal of 3091393 is 3931903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2745649 + 345744 = 1657^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 3091393 - 2¹ = 3091391 is a prime.

Together with 3091391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3091391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1545696 + 1545697.

It is an arithmetic number, because the mean of its divisors is an integer number (1545697).

Almost surely, 2^3091393 is an apocalyptic number.

It is an amenable number.

3091393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3091393 is an equidigital number, since it uses as much as digits as its factorization.

3091393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 3091393 is about 1758.2357634857. The cubic root of 3091393 is about 145.6749037217.

The spelling of 3091393 in words is "three million, ninety-one thousand, three hundred ninety-three".