349456189777 has 2 divisors, whose sum is σ = 349456189778. Its totient is φ = 349456189776.

The previous prime is 349456189751. The next prime is 349456189799. The reversal of 349456189777 is 777981654943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330123790096 + 19332399681 = 574564^2 + 139041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349456189777 is a prime.

It is not a weakly prime, because it can be changed into another prime (349456181777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174728094888 + 174728094889.

It is an arithmetic number, because the mean of its divisors is an integer number (174728094889).

Almost surely, 2^349456189777 is an apocalyptic number.

It is an amenable number.

349456189777 is a deficient number, since it is larger than the sum of its proper divisors (1).

349456189777 is an equidigital number, since it uses as much as digits as its factorization.

349456189777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 70.

The spelling of 349456189777 in words is "three hundred forty-nine billion, four hundred fifty-six million, one hundred eighty-nine thousand, seven hundred seventy-seven".