998498351 has 2 divisors, whose sum is σ = 998498352. Its totient is φ = 998498350.

The previous prime is 998498341. The next prime is 998498419. The reversal of 998498351 is 153894899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998498351 - 2¹⁸ = 998236207 is a 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 (998498341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499249175 + 499249176.

It is an arithmetic number, because the mean of its divisors is an integer number (499249176).

Almost surely, 2^998498351 is an apocalyptic number.

998498351 is a deficient number, since it is larger than the sum of its proper divisors (1).

998498351 is an equidigital number, since it uses as much as digits as its factorization.

998498351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 56.

The square root of 998498351 is about 31599.0245260831. The cubic root of 998498351 is about 999.4991995741.

The spelling of 998498351 in words is "nine hundred ninety-eight million, four hundred ninety-eight thousand, three hundred fifty-one".