3406809858391 has 2 divisors, whose sum is σ = 3406809858392. Its totient is φ = 3406809858390.

The previous prime is 3406809858373. The next prime is 3406809858421. The reversal of 3406809858391 is 1938589086043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3406809858391 - 2⁹ = 3406809857879 is a prime.

It is a super-2 number, since 2×3406809858391² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3406809858791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703404929195 + 1703404929196.

It is an arithmetic number, because the mean of its divisors is an integer number (1703404929196).

Almost surely, 2^{3406809858391} is an apocalyptic number.

3406809858391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3406809858391 is an equidigital number, since it uses as much as digits as its factorization.

3406809858391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44789760, while the sum is 64.

The spelling of 3406809858391 in words is "three trillion, four hundred six billion, eight hundred nine million, eight hundred fifty-eight thousand, three hundred ninety-one".