344899921 has 2 divisors, whose sum is σ = 344899922. Its totient is φ = 344899920.

The previous prime is 344899901. The next prime is 344899931. The reversal of 344899921 is 129998443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263250625 + 81649296 = 16225^2 + 9036^2 .

It is a cyclic number.

It is not a de Polignac number, because 344899921 - 2⁵ = 344899889 is a prime.

It is not a weakly prime, because it can be changed into another prime (344899901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172449960 + 172449961.

It is an arithmetic number, because the mean of its divisors is an integer number (172449961).

Almost surely, 2^344899921 is an apocalyptic number.

It is an amenable number.

344899921 is a deficient number, since it is larger than the sum of its proper divisors (1).

344899921 is an equidigital number, since it uses as much as digits as its factorization.

344899921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 344899921 is about 18571.4813894853. The cubic root of 344899921 is about 701.2900842086.

The spelling of 344899921 in words is "three hundred forty-four million, eight hundred ninety-nine thousand, nine hundred twenty-one".