349438223689 has 9 divisors (see below), whose sum is σ = 350556068277. Its totient is φ = 348323937984.

The previous prime is 349438223677. The next prime is 349438223699. The reversal of 349438223689 is 986322834943.

The square root of 349438223689 is 591133.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5934391225 + 343503832464 = 77035^2 + 586092^2 .

It is not a de Polignac number, because 349438223689 - 2³⁵ = 315078485321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349438223669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 234679057 + ... + 234680545.

It is an arithmetic number, because the mean of its divisors is an integer number (38950674253).

Almost surely, 2^349438223689 is an apocalyptic number.

349438223689 is the 591133-rd square number.

349438223689 is the 295567-th centered octagonal number.

It is an amenable number.

349438223689 is a deficient number, since it is larger than the sum of its proper divisors (1117844588).

349438223689 is an frugal number, since it uses more digits than its factorization.

349438223689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772 (or 1886 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 61.

The spelling of 349438223689 in words is "three hundred forty-nine billion, four hundred thirty-eight million, two hundred twenty-three thousand, six hundred eighty-nine".