344345405 has 4 divisors (see below), whose sum is σ = 413214492. Its totient is φ = 275476320.

The previous prime is 344345381. The next prime is 344345411. The reversal of 344345405 is 504543443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504543443 = 1879 ⋅268517.

It can be written as a sum of positive squares in 2 ways, for example, as 40819321 + 303526084 = 6389^2 + 17422^2 .

It is not a de Polignac number, because 344345405 - 2²⁶ = 277236541 is a prime.

It is a super-2 number, since 2×344345405² = 237147515889228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34434536 + ... + 34434545.

It is an arithmetic number, because the mean of its divisors is an integer number (103303623).

Almost surely, 2^344345405 is an apocalyptic number.

It is an amenable number.

344345405 is a deficient number, since it is larger than the sum of its proper divisors (68869087).

344345405 is an equidigital number, since it uses as much as digits as its factorization.

344345405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68869086.

The product of its (nonzero) digits is 57600, while the sum is 32.

The square root of 344345405 is about 18556.5461495398. The cubic root of 344345405 is about 700.9140474304.

Adding to 344345405 its reverse (504543443), we get a palindrome (848888848).

The spelling of 344345405 in words is "three hundred forty-four million, three hundred forty-five thousand, four hundred five".