998531017 has 8 divisors (see below), whose sum is σ = 1092449952. Its totient is φ = 905136000.

The previous prime is 998531003. The next prime is 998531029. The reversal of 998531017 is 710135899.

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 998531017 - 2¹⁹ = 998006729 is a prime.

It is a super-2 number, since 2×998531017² = 1994128383822108578, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 998531017 parts by 44688 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (998531047) 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, 126984 + ... + 134617.

It is an arithmetic number, because the mean of its divisors is an integer number (136556244).

Almost surely, 2^998531017 is an apocalyptic number.

It is an amenable number.

998531017 is a deficient number, since it is larger than the sum of its proper divisors (93918935).

998531017 is a wasteful number, since it uses less digits than its factorization.

998531017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261959.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 998531017 is about 31599.5414049002. The cubic root of 998531017 is about 999.5100990362.

The spelling of 998531017 in words is "nine hundred ninety-eight million, five hundred thirty-one thousand, seventeen".