344604385 has 16 divisors (see below), whose sum is σ = 424467792. Its totient is φ = 268416000.

The previous prime is 344604373. The next prime is 344604389. The reversal of 344604385 is 583406443.

It can be written as a sum of positive squares in 8 ways, for example, as 576081 + 344028304 = 759^2 + 18548^2 .

It is not a de Polignac number, because 344604385 - 2¹¹ = 344602337 is a prime.

It is a super-2 number, since 2×344604385² = 237504364322456450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344604389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121807 + ... + 124603.

It is an arithmetic number, because the mean of its divisors is an integer number (26529237).

Almost surely, 2^344604385 is an apocalyptic number.

It is an amenable number.

344604385 is a deficient number, since it is larger than the sum of its proper divisors (79863407).

344604385 is a wasteful number, since it uses less digits than its factorization.

344604385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 344604385 is about 18563.5229684454. The cubic root of 344604385 is about 701.0897210699.

The spelling of 344604385 in words is "three hundred forty-four million, six hundred four thousand, three hundred eighty-five".