398882178419 has 2 divisors, whose sum is σ = 398882178420. Its totient is φ = 398882178418.

The previous prime is 398882178389. The next prime is 398882178439. The reversal of 398882178419 is 914871288893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398882178419 - 2³⁶ = 330162701683 is a prime.

It is a super-2 number, since 2×398882178419² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (398882178439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199441089209 + 199441089210.

It is an arithmetic number, because the mean of its divisors is an integer number (199441089210).

Almost surely, 2^398882178419 is an apocalyptic number.

398882178419 is a deficient number, since it is larger than the sum of its proper divisors (1).

398882178419 is an equidigital number, since it uses as much as digits as its factorization.

398882178419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55738368, while the sum is 68.

The spelling of 398882178419 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, one hundred seventy-eight thousand, four hundred nineteen".