998894727 has 16 divisors (see below), whose sum is σ = 1490496000. Its totient is φ = 661136472.

The previous prime is 998894719. The next prime is 998894731. The reversal of 998894727 is 727498899.

It is not a de Polignac number, because 998894727 - 2³ = 998894719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998894717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129327 + ... + 136832.

It is an arithmetic number, because the mean of its divisors is an integer number (93156000).

Almost surely, 2^998894727 is an apocalyptic number.

998894727 is a deficient number, since it is larger than the sum of its proper divisors (491601273).

998894727 is a wasteful number, since it uses less digits than its factorization.

998894727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266307 (or 266301 counting only the distinct ones).

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

The square root of 998894727 is about 31605.2958695216. The cubic root of 998894727 is about 999.6314398468.

The spelling of 998894727 in words is "nine hundred ninety-eight million, eight hundred ninety-four thousand, seven hundred twenty-seven".