398273311 has 2 divisors, whose sum is σ = 398273312. Its totient is φ = 398273310.

The previous prime is 398273299. The next prime is 398273329. The reversal of 398273311 is 113372893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398273311 - 2⁵ = 398273279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398273341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199136655 + 199136656.

It is an arithmetic number, because the mean of its divisors is an integer number (199136656).

Almost surely, 2^398273311 is an apocalyptic number.

398273311 is a deficient number, since it is larger than the sum of its proper divisors (1).

398273311 is an equidigital number, since it uses as much as digits as its factorization.

398273311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 398273311 is about 19956.7860889473. The cubic root of 398273311 is about 735.7445744242.

The spelling of 398273311 in words is "three hundred ninety-eight million, two hundred seventy-three thousand, three hundred eleven".