344976221 has 2 divisors, whose sum is σ = 344976222. Its totient is φ = 344976220.

The previous prime is 344976211. The next prime is 344976259. The reversal of 344976221 is 122679443.

It is an a-pointer prime, because the next prime (344976259) can be obtained adding 344976221 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271788196 + 73188025 = 16486^2 + 8555^2 .

It is an emirp because it is prime and its reverse (122679443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344976221 - 2¹⁸ = 344714077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344976211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172488110 + 172488111.

It is an arithmetic number, because the mean of its divisors is an integer number (172488111).

Almost surely, 2^344976221 is an apocalyptic number.

It is an amenable number.

344976221 is a deficient number, since it is larger than the sum of its proper divisors (1).

344976221 is an equidigital number, since it uses as much as digits as its factorization.

344976221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 344976221 is about 18573.5355008141. The cubic root of 344976221 is about 701.3417943665.

The spelling of 344976221 in words is "three hundred forty-four million, nine hundred seventy-six thousand, two hundred twenty-one".