998212469 has 2 divisors, whose sum is σ = 998212470. Its totient is φ = 998212468.

The previous prime is 998212429. The next prime is 998212513. The reversal of 998212469 is 964212899.

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., 731053444 + 267159025 = 27038^2 + 16345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998212469 is a prime.

It is a super-2 number, since 2×998212469² = 1992856266534151922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998212429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499106234 + 499106235.

It is an arithmetic number, because the mean of its divisors is an integer number (499106235).

Almost surely, 2^998212469 is an apocalyptic number.

It is an amenable number.

998212469 is a deficient number, since it is larger than the sum of its proper divisors (1).

998212469 is an equidigital number, since it uses as much as digits as its factorization.

998212469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The square root of 998212469 is about 31594.5006132396. The cubic root of 998212469 is about 999.4038009507.

The spelling of 998212469 in words is "nine hundred ninety-eight million, two hundred twelve thousand, four hundred sixty-nine".