344827921 has 2 divisors, whose sum is σ = 344827922. Its totient is φ = 344827920.

The previous prime is 344827909. The next prime is 344827933. The reversal of 344827921 is 129728443.

It is a balanced prime because it is at equal distance from previous prime (344827909) and next prime (344827933).

It can be written as a sum of positive squares in only one way, i.e., 324900625 + 19927296 = 18025^2 + 4464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344827921 is a prime.

It is not a weakly prime, because it can be changed into another prime (344827991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172413960 + 172413961.

It is an arithmetic number, because the mean of its divisors is an integer number (172413961).

Almost surely, 2^344827921 is an apocalyptic number.

It is an amenable number.

344827921 is a deficient number, since it is larger than the sum of its proper divisors (1).

344827921 is an equidigital number, since it uses as much as digits as its factorization.

344827921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 344827921 is about 18569.5428322832. The cubic root of 344827921 is about 701.2412812593.

The spelling of 344827921 in words is "three hundred forty-four million, eight hundred twenty-seven thousand, nine hundred twenty-one".