344575921 has 2 divisors, whose sum is σ = 344575922. Its totient is φ = 344575920.

The previous prime is 344575919. The next prime is 344575937. The reversal of 344575921 is 129575443.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250272400 + 94303521 = 15820^2 + 9711^2 .

It is a cyclic number.

It is not a de Polignac number, because 344575921 - 2¹ = 344575919 is a prime.

Together with 344575919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (344575421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172287960 + 172287961.

It is an arithmetic number, because the mean of its divisors is an integer number (172287961).

Almost surely, 2^344575921 is an apocalyptic number.

It is an amenable number.

344575921 is a deficient number, since it is larger than the sum of its proper divisors (1).

344575921 is an equidigital number, since it uses as much as digits as its factorization.

344575921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 344575921 is about 18562.7562877930. The cubic root of 344575921 is about 701.0704174199.

The spelling of 344575921 in words is "three hundred forty-four million, five hundred seventy-five thousand, nine hundred twenty-one".