398220419 has 2 divisors, whose sum is σ = 398220420. Its totient is φ = 398220418.

The previous prime is 398220379. The next prime is 398220437. The reversal of 398220419 is 914022893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398220419 - 2²⁴ = 381443203 is a prime.

It is a super-2 number, since 2×398220419² = 317159004217071122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (398220439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199110209 + 199110210.

It is an arithmetic number, because the mean of its divisors is an integer number (199110210).

Almost surely, 2^398220419 is an apocalyptic number.

398220419 is a deficient number, since it is larger than the sum of its proper divisors (1).

398220419 is an equidigital number, since it uses as much as digits as its factorization.

398220419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 398220419 is about 19955.4608816735. The cubic root of 398220419 is about 735.7120032193.

The spelling of 398220419 in words is "three hundred ninety-eight million, two hundred twenty thousand, four hundred nineteen".