998079449 has 2 divisors, whose sum is σ = 998079450. Its totient is φ = 998079448.

The previous prime is 998079413. The next prime is 998079487. The reversal of 998079449 is 944970899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 569299600 + 428779849 = 23860^2 + 20707^2 .

It is an emirp because it is prime and its reverse (944970899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998079449 - 2²⁰ = 997030873 is a prime.

It is a super-2 number, since 2×998079449² = 1992325173032287202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998079949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499039724 + 499039725.

It is an arithmetic number, because the mean of its divisors is an integer number (499039725).

Almost surely, 2^998079449 is an apocalyptic number.

It is an amenable number.

998079449 is a deficient number, since it is larger than the sum of its proper divisors (1).

998079449 is an equidigital number, since it uses as much as digits as its factorization.

998079449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 998079449 is about 31592.3954299132. The cubic root of 998079449 is about 999.3594060604.

The spelling of 998079449 in words is "nine hundred ninety-eight million, seventy-nine thousand, four hundred forty-nine".