398099519 has 2 divisors, whose sum is σ = 398099520. Its totient is φ = 398099518.

The previous prime is 398099509. The next prime is 398099531. The reversal of 398099519 is 915990893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398099519 - 2⁴ = 398099503 is a prime.

It is a super-2 number, since 2×398099519² = 316966454056062722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398099509) 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, 199049759 + 199049760.

It is an arithmetic number, because the mean of its divisors is an integer number (199049760).

Almost surely, 2^398099519 is an apocalyptic number.

398099519 is a deficient number, since it is larger than the sum of its proper divisors (1).

398099519 is an equidigital number, since it uses as much as digits as its factorization.

398099519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 398099519 is about 19952.4314057210. The cubic root of 398099519 is about 735.6375414556.

The spelling of 398099519 in words is "three hundred ninety-eight million, ninety-nine thousand, five hundred nineteen".