354393873989 has 2 divisors, whose sum is σ = 354393873990. Its totient is φ = 354393873988.

The previous prime is 354393873971. The next prime is 354393873991. The reversal of 354393873989 is 989378393453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200741633764 + 153652240225 = 448042^2 + 391985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354393873989 is a prime.

Together with 354393873991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354393873929) 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, 177196936994 + 177196936995.

It is an arithmetic number, because the mean of its divisors is an integer number (177196936995).

Almost surely, 2^354393873989 is an apocalyptic number.

It is an amenable number.

354393873989 is a deficient number, since it is larger than the sum of its proper divisors (1).

354393873989 is an equidigital number, since it uses as much as digits as its factorization.

354393873989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529079040, while the sum is 71.

The spelling of 354393873989 in words is "three hundred fifty-four billion, three hundred ninety-three million, eight hundred seventy-three thousand, nine hundred eighty-nine".