998279519 has 2 divisors, whose sum is σ = 998279520. Its totient is φ = 998279518.

The previous prime is 998279507. The next prime is 998279561. The reversal of 998279519 is 915972899.

998279519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (915972899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998279519 is a prime.

It is a super-2 number, since 2×998279519² = 1993123996109742722, 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 (998270519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499139759 + 499139760.

It is an arithmetic number, because the mean of its divisors is an integer number (499139760).

Almost surely, 2^998279519 is an apocalyptic number.

998279519 is a deficient number, since it is larger than the sum of its proper divisors (1).

998279519 is an equidigital number, since it uses as much as digits as its factorization.

998279519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 59.

The square root of 998279519 is about 31595.5616978081. The cubic root of 998279519 is about 999.4261771236.

The spelling of 998279519 in words is "nine hundred ninety-eight million, two hundred seventy-nine thousand, five hundred nineteen".