347984357957 has 2 divisors, whose sum is σ = 347984357958. Its totient is φ = 347984357956.

The previous prime is 347984357911. The next prime is 347984357993. The reversal of 347984357957 is 759753489743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179753952676 + 168230405281 = 423974^2 + 410159^2 .

It is a cyclic number.

It is not a de Polignac number, because 347984357957 - 2⁸ = 347984357701 is a prime.

It is a super-2 number, since 2×347984357957² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347984357057) 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, 173992178978 + 173992178979.

It is an arithmetic number, because the mean of its divisors is an integer number (173992178979).

Almost surely, 2^347984357957 is an apocalyptic number.

It is an amenable number.

347984357957 is a deficient number, since it is larger than the sum of its proper divisors (1).

347984357957 is an equidigital number, since it uses as much as digits as its factorization.

347984357957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800150400, while the sum is 71.

The spelling of 347984357957 in words is "three hundred forty-seven billion, nine hundred eighty-four million, three hundred fifty-seven thousand, nine hundred fifty-seven".