998774829 has 48 divisors (see below), whose sum is σ = 1593434752. Its totient is φ = 599094144.

The previous prime is 998774827. The next prime is 998774851. The reversal of 998774829 is 928477899.

It is not a de Polignac number, because 998774829 - 2¹ = 998774827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998774827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 806799 + ... + 808035.

Almost surely, 2^998774829 is an apocalyptic number.

It is an amenable number.

998774829 is a deficient number, since it is larger than the sum of its proper divisors (594659923).

998774829 is a wasteful number, since it uses less digits than its factorization.

998774829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1423 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 998774829 is about 31603.3990102331. The cubic root of 998774829 is about 999.5914427704.

The spelling of 998774829 in words is "nine hundred ninety-eight million, seven hundred seventy-four thousand, eight hundred twenty-nine".