344884878361 has 3 divisors (see below), whose sum is σ = 344885465631. Its totient is φ = 344884291092.

The previous prime is 344884878347. The next prime is 344884878389. The reversal of 344884878361 is 163878488443.

The square root of 344884878361 is 587269.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 163878488443 = 31 ⋅5286402853.

It can be written as a sum of positive squares in only one way, i.e., 249069866761 + 95815011600 = 499069^2 + 309540^2 .

It is not a de Polignac number, because 344884878361 - 2⁵ = 344884878329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344884878293 and 344884878302.

It is not an unprimeable number, because it can be changed into a prime (344884878391) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 293635 + ... + 880903.

It is an arithmetic number, because the mean of its divisors is an integer number (114961821877).

Almost surely, 2^344884878361 is an apocalyptic number.

344884878361 is the 587269-th square number.

344884878361 is the 293635-th centered octagonal number.

It is an amenable number.

344884878361 is a deficient number, since it is larger than the sum of its proper divisors (587270).

344884878361 is an frugal number, since it uses more digits than its factorization.

344884878361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174538 (or 587269 counting only the distinct ones).

The product of its digits is 99090432, while the sum is 64.

Multiplying 344884878361 by its sum of digits (64), we get a square (22072632215104 = 4698152²).

The spelling of 344884878361 in words is "three hundred forty-four billion, eight hundred eighty-four million, eight hundred seventy-eight thousand, three hundred sixty-one".