398004911 has 2 divisors, whose sum is σ = 398004912. Its totient is φ = 398004910.

The previous prime is 398004899. The next prime is 398005007. The reversal of 398004911 is 119400893.

It is a weak prime.

It is an emirp because it is prime and its reverse (119400893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398004911 - 2²² = 393810607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398004011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199002455 + 199002456.

It is an arithmetic number, because the mean of its divisors is an integer number (199002456).

Almost surely, 2^398004911 is an apocalyptic number.

398004911 is a deficient number, since it is larger than the sum of its proper divisors (1).

398004911 is an equidigital number, since it uses as much as digits as its factorization.

398004911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 398004911 is about 19950.0604259737. The cubic root of 398004911 is about 735.5792623008.

The spelling of 398004911 in words is "three hundred ninety-eight million, four thousand, nine hundred eleven".