398144419 has 2 divisors, whose sum is σ = 398144420. Its totient is φ = 398144418.

The previous prime is 398144413. The next prime is 398144477. The reversal of 398144419 is 914441893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398144419 - 2⁵ = 398144387 is a prime.

It is a super-2 number, since 2×398144419² = 317037956761695122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (398144413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199072209 + 199072210.

It is an arithmetic number, because the mean of its divisors is an integer number (199072210).

Almost surely, 2^398144419 is an apocalyptic number.

398144419 is a deficient number, since it is larger than the sum of its proper divisors (1).

398144419 is an equidigital number, since it uses as much as digits as its factorization.

398144419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 398144419 is about 19953.5565501491. The cubic root of 398144419 is about 735.6651969222.

It can be divided in two parts, 3981 and 44419, that added together give a square (48400 = 220²).

The spelling of 398144419 in words is "three hundred ninety-eight million, one hundred forty-four thousand, four hundred nineteen".