998804287 has 8 divisors (see below), whose sum is σ = 1086079904. Its totient is φ = 913020768.

The previous prime is 998804249. The next prime is 998804311. The reversal of 998804287 is 782408899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998804287 - 2¹¹ = 998802239 is a prime.

It is a super-2 number, since 2×998804287² = 1995220007459156738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998804237) 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 7 ways as a sum of consecutive naturals, for example, 371628 + ... + 374305.

It is an arithmetic number, because the mean of its divisors is an integer number (135759988).

Almost surely, 2^998804287 is an apocalyptic number.

998804287 is the 18247-th hex number.

998804287 is a deficient number, since it is larger than the sum of its proper divisors (87275617).

998804287 is a wasteful number, since it uses less digits than its factorization.

998804287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746049.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 998804287 is about 31603.8650642607. The cubic root of 998804287 is about 999.6012700355.

The spelling of 998804287 in words is "nine hundred ninety-eight million, eight hundred four thousand, two hundred eighty-seven".