344765405 has 4 divisors (see below), whose sum is σ = 413718492. Its totient is φ = 275812320.

The previous prime is 344765383. The next prime is 344765413. The reversal of 344765405 is 504567443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504567443 = 41 ⋅12306523.

It can be written as a sum of positive squares in 2 ways, for example, as 51294244 + 293471161 = 7162^2 + 17131^2 .

It is not a de Polignac number, because 344765405 - 2¹⁴ = 344749021 is a prime.

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, 34476536 + ... + 34476545.

It is an arithmetic number, because the mean of its divisors is an integer number (103429623).

Almost surely, 2^344765405 is an apocalyptic number.

It is an amenable number.

344765405 is a deficient number, since it is larger than the sum of its proper divisors (68953087).

344765405 is an equidigital number, since it uses as much as digits as its factorization.

344765405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68953086.

The product of its (nonzero) digits is 201600, while the sum is 38.

The square root of 344765405 is about 18567.8594619843. The cubic root of 344765405 is about 701.1989012326.

The spelling of 344765405 in words is "three hundred forty-four million, seven hundred sixty-five thousand, four hundred five".