344454421405 has 4 divisors (see below), whose sum is σ = 413345305692. Its totient is φ = 275563537120.

The previous prime is 344454421361. The next prime is 344454421411. The reversal of 344454421405 is 504124454443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504124454443 = 23 ⋅21918454541.

It can be written as a sum of positive squares in 2 ways, for example, as 222039806521 + 122414614884 = 471211^2 + 349878^2 .

It is not a de Polignac number, because 344454421405 - 2³⁷ = 207015467933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34445442136 + ... + 34445442145.

It is an arithmetic number, because the mean of its divisors is an integer number (103336326423).

Almost surely, 2^344454421405 is an apocalyptic number.

It is an amenable number.

344454421405 is a deficient number, since it is larger than the sum of its proper divisors (68890884287).

344454421405 is an equidigital number, since it uses as much as digits as its factorization.

344454421405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68890884286.

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 344454421405 its reverse (504124454443), we get a palindrome (848578875848).

The spelling of 344454421405 in words is "three hundred forty-four billion, four hundred fifty-four million, four hundred twenty-one thousand, four hundred five".