344420905 has 16 divisors (see below), whose sum is σ = 416484864. Its totient is φ = 273427200.

The previous prime is 344420899. The next prime is 344420911. The reversal of 344420905 is 509024443.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (344420899) and next prime (344420911).

It is not a de Polignac number, because 344420905 - 2⁵ = 344420873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 567112 + ... + 567718.

It is an arithmetic number, because the mean of its divisors is an integer number (26030304).

Almost surely, 2^344420905 is an apocalyptic number.

It is an amenable number.

344420905 is a deficient number, since it is larger than the sum of its proper divisors (72063959).

344420905 is a wasteful number, since it uses less digits than its factorization.

344420905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 344420905 is about 18558.5803605772. The cubic root of 344420905 is about 700.9652703620.

The spelling of 344420905 in words is "three hundred forty-four million, four hundred twenty thousand, nine hundred five".