398878097419 has 2 divisors, whose sum is σ = 398878097420. Its totient is φ = 398878097418.

The previous prime is 398878097407. The next prime is 398878097441. The reversal of 398878097419 is 914790878893.

It is a weak prime.

It is an emirp because it is prime and its reverse (914790878893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398878097419 - 2¹³ = 398878089227 is a prime.

It is a super-2 number, since 2×398878097419² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (398878097479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199439048709 + 199439048710.

It is an arithmetic number, because the mean of its divisors is an integer number (199439048710).

Almost surely, 2^398878097419 is an apocalyptic number.

398878097419 is a deficient number, since it is larger than the sum of its proper divisors (1).

398878097419 is an equidigital number, since it uses as much as digits as its factorization.

398878097419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 219469824, while the sum is 73.

The spelling of 398878097419 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-seven thousand, four hundred nineteen".