344722405 has 4 divisors (see below), whose sum is σ = 413666892. Its totient is φ = 275777920.

The previous prime is 344722403. The next prime is 344722423. The reversal of 344722405 is 504227443.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90288004 + 254434401 = 9502^2 + 15951^2 .

It is not a de Polignac number, because 344722405 - 2¹ = 344722403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344722403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34472236 + ... + 34472245.

It is an arithmetic number, because the mean of its divisors is an integer number (103416723).

Almost surely, 2^344722405 is an apocalyptic number.

It is an amenable number.

344722405 is a deficient number, since it is larger than the sum of its proper divisors (68944487).

344722405 is an equidigital number, since it uses as much as digits as its factorization.

344722405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68944486.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 344722405 is about 18566.7015110385. The cubic root of 344722405 is about 701.1697482628.

Adding to 344722405 its reverse (504227443), we get a palindrome (848949848).

It can be divided in two parts, 3447 and 22405, that added together give a palindrome (25852).

The spelling of 344722405 in words is "three hundred forty-four million, seven hundred twenty-two thousand, four hundred five".